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Nissan Ariya: High Voltage Battery/high Voltage Battery 2 (lbc)

Nissan Ariya (FE0) 2023-2025 Service & Repair Manual / Electric Power Train / Ev Battery System :: 66kwh Li-Ion Battery / Dtc Diagnosis / High Voltage Battery/high Voltage Battery 2 (lbc)

P1b00-16 Power Supply Voltage Nissan Ariya 1st generation

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B00 16 Power supply voltage Diagnosis condition Power switch ON
Signal (terminal) LBC power supply voltage
Threshold When power supply voltage of LBC falls below the specified voltage
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

LBC power supply circuit

FAIL-SAFE

Pattern B: Driving output power limit, Charge stop, and EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B00-16 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check LBC power supply and ground circuit. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

Perform intermittent incident. Refer to Intermittent Incident.

NO>>

Repair or replace malfunctioning parts.

P1b01-12 Cell Voltage Circuit Nissan Ariya 1st generation

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B01 12 Cell voltage circuit Diagnosis condition Power switch ON
Signal (terminal) ASIC
Threshold When detecting short circuit of cell voltage measuring circuit
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

  • Cell voltage detection circuit

  • Cell (module)

  • Cell controller

FAIL-SAFE

Pattern B: Driving output power limit, Charge stop, and EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B01-12 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK CELL VOLTAGE DATA MONITOR

With CONSULT

  1. Power switch ON.

  2. Select "Data Monitor" of "HIGH VOLTAGE BATTERY".

  3. Select "Cell voltage 01-96".

  4. Confirm that "Cell voltage 01 to Cell voltage 96" is between 2.5 V and 4.2 V.

Is any cell abnormal?

YES>>

GO TO 2.

NO>>

Perform intermittent incident. Refer to Intermittent Incident.

CHECK CELL VOLTAGE DETECTION CIRCUIT

Check cell voltage circuit (harness connector between cell controller and module) corresponding to that cell is abnormal. Refer to Diagnosis Procedure.

NOTE:

For comparison of cell, module, and cell controller, Refer to Component Description.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace malfunctioning parts.

CHECK MODULE VOLTAGE

Check the voltage of the module corresponding to abnormal cell number. Refer to Component Inspection.

NOTE:

For comparison of cell, module, and cell controller, Refer to Component Description.

Is the inspection result normal?

YES>>

Replace cell controller corresponding to that cell is abnormal.Refer to Removal & Installation.

NO>>

Repair corresponding module.

  • Refer to Disassembly & Assembly.

  • Refer to Disassembly & Assembly.

P1b01-62 Cell Voltage Circuit Nissan Ariya SUV

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B01 62 Cell voltage circuit Diagnosis condition Power switch ON
Signal (terminal) Cell voltage
Threshold With the power switch ON and no load condition, the difference between the maximum voltage and minimum voltage exceeds the allowable range.
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

  • Cell voltage detection circuit

  • Cell (module)

FAIL-SAFE

Pattern F: Driving output power limit, and EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. All high voltage load (A/C, PTC heater, etc.) are OFF.

  3. Check "Self Diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B01-62 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK FFD

With CONSULT

  1. Power switch ON.

  2. Confirm "FFD" mode of detected DTC and record the following items.

    • "Maximum cell voltage"

    • "Maximum voltage cell No"

    • "Minimum cell voltage"

    • "Minimum voltage cell No"

  3. Select "DATA MONITOR" with "HIGH VOLTAGE BATTERY".

  4. Record the "Total battery voltage".

>>

GO TO 2.

CHECK CELL VOLTAGE

  1. Average cell voltage is calculated from recorded "Total battery voltage".

    • Average cell voltage = Total battery voltage / 96

  2. The followings are calculated from average cell voltage, "maximum cell voltage" and "minimum cell voltage".

    • "A" = "Maximum cell voltage" - Average cell voltage

    • "B" = Average cell voltage - "Minimum cell voltage"

NOTE:

For comparison of cell, module, and cell controller, Refer to Component Description.

Compare calculated values of "A" and "B"

"A" > "B">>

Replace module which includes cell corresponding to "maximum voltage cell number", and then GO TO 3.

  • Refer to Disassembly & Assembly.

  • Refer to Disassembly & Assembly.

"A" ≦ "B">>

Replace module which includes cell corresponding to "minimum voltage cell number", and then GO TO 3.

  • Refer to Disassembly & Assembly.

  • Refer to Disassembly & Assembly.

ASSEMBLY AND INSTALLATION OF LI-ION BATTERY

Assemble and install Li-ion battery.

>>

GO TO 4.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON.

  2. Erase DTC.

    NOTE:

    Erase DTC in order first "HIGH VOLTAGE BATTERY 2" then next "HIGH VOLTAGE BATTERY".

  3. Power switch OFF and wait at least 5 minute.

  4. Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is P1B01-62 detected?

YES>>

GO TO 1.

NO>>

INSPECTION END

P1b01-F1 Cell Voltage Circuit Nissan Ariya SUV

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B01 F1 Cell voltage circuit Diagnosis condition Power switch ON
Signal (terminal) Cell voltage
Threshold When cell voltage exceeds available voltage range.
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

  • Cell voltage detection circuit

  • Cell (module)

FAIL-SAFE

Pattern A: No driving, Charge stop, and EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B01-F1 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK MAXIMUM VOLTAGE CELL NUMBER

With CONSULT

  1. Power switch ON.

  2. Check "FFD" mode of detected DTC and record "Maximum voltage cell No".

>>

GO TO 2.

CHECK CELL VOLTAGE DETECTION CIRCUIT

Check cell voltage circuit (harness connector between cell controller and module) that is displayed on the recorded "Maximum voltage cell No". Refer to Diagnosis Procedure.

NOTE:

For comparison of cell, module, and cell controller, Refer to Component Description.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace malfunctioning parts.

CHECK CELL VOLTAGE

Check cell voltage that is displayed on the recorded "Maximum voltage cell No".

NOTE:

For comparison of cell, module, and cell controller, Refer to Component Description.

Cell voltage is 4.3 V or more>>

Replace corresponding module.

  • Refer to Disassembly & Assembly.

  • Refer to Disassembly & Assembly

Cell voltage is 4.3 V or less>>

Replace cell controller corresponding to the cell. Refer to Removal & Installation.

P1b03-01 Current Sensor Nissan Ariya: FE0

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B03 01 Current sensor Diagnosis condition Power switch ON
Signal (terminal) Battery current sensor signal (CAN communication)
Threshold When self diagnosis program detects malfunction of internal battery current sensor.
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

Battery current sensor

FAIL-SAFE

Pattern B: Driving output power limit, Charge stop, and EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B03-01 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK BATTERY CURRENT SENSOR

Check battery current sensor circuit. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

Replace battery junction box. Refer to Disassembly & Assembly. (Built-in battery current sensor)

NO>>

Repair or replace malfunctioning parts.

P1b04-11 Module Temperature Sensor Nissan Ariya 1st generation

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B04 11 Module temperature sensor Diagnosis condition Power switch ON
Signal (terminal) Module temperature sensor voltage
Threshold When short circuit is detected in less than half of module temperature sensor circuits.
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

  • Module temperature sensor

  • Module temperature sensor circuit

  • Cell controller

FAIL-SAFE

Pattern B: Driving output power limit, Charge stop, and EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B04-11 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK BATTERY PACK TEMPERATURE SENSOR STATE

With CONSULT

  1. Power switch ON.

  2. Select "Data Monitor" of "HIGH VOLTAGE BATTERY" and record "Battery pack temp status".

Is abnormality of "Open / Short to wire" or record of "Short to ground" displayed?

YES>>

GO TO 2.

NO>>

GO TO 3.

CHECK MODULE TEMPERATURE SENSOR CIRCUIT.

Check each module temperature sensor circuit (harness connector between cell controller and module).Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace malfunctioning parts.

CHECK MODULE TEMPERATURE SENSOR

Check module temperature sensor. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Replace cell controller. Refer to Removal & Installation.

NO>>

Repair Corresponding module.

  • Refer to Disassembly & Assembly.

  • Refer to Disassembly & Assembly.

P1b05-62 Module Temperature Sensor Nissan Ariya SUV

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B05 62 Module temperature sensor Diagnosis condition Power switch ON
Signal (terminal) Module temperature sensor temperature
Threshold Deviation in temperature characteristics between more than half of module temperature sensors.
Diagnosis delay time More than 2 seconds continuously

POSSIBLE CAUSE

  • Module temperature sensor

  • Module temperature sensor circuit

  • Cell controller

FAIL-SAFE

Pattern B: Driving output power limit, Charge stop, and EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B05-62 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK DTC DETECTION OF MODULE TEMPERATURE SENSOR SYSTEM

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self Diagnostic Results" of "HIGH VOLTAGE BATTERY".

  3. Check if DTCs P1B30-11/15/62 (Module temperature sensor 1) to P1B3B-11/15/62(Module temperature sensor 12) are detected.

Is corresponding DTC detected?

YES>>

GO TO 2.

NO>>

GO TO 4.

CHECK MODULE TEMPERATURE SENSOR CIRCUIT

Check module temperature sensor circuit (harness connector between cell controller and module) which detected DTC indicates. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace malfunctioning parts.

CHECK MODULE TEMPERATURE SENSOR

Check module temperature sensor which detected DTC indicates. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Replace corresponding cell controller. Refer to Removal & Installation.

NO>>

Replace corresponding module.

  • Refer to Disassembly & Assembly.

  • Refer to Disassembly & Assembly.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

  1. Power switch ON.

  2. Erase DTC.

    NOTE:

    Erase DTC in order first "HIGH VOLTAGE BATTERY 2" then next "HIGH VOLTAGE BATTERY".

  3. Perform DTC confirmation procedure again. Refer toDTC Diagnosis Procedure.

Is P1B05-62 detected?

YES>>

Replace Li-ion battery controller and all cell controllers. Refer to Removal & Installation.

NO>>

INSPECTION END

P1b07-11 Water Temperature Sensor a Nissan Ariya 2023

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B07 11 Water temperature sensor A Diagnosis condition Power switch ON
Signal (terminal) Battery pack water temperature voltage
Threshold When detecting short circuit in battery pack water temperature circuit.
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

  • Battery pack water temperature sensor circuit

  • Battery pack water temperature sensor

FAIL-SAFE

Pattern G: Charge limit, and EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B07-11 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK BATTERY PACK WATER TEMPERATURE SENSOR

Check battery water temperature sensor. Refer to Component Inspection.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Replace battery pack water temperature sensor. Refer to Disassembly & Assembly.

CHECK BATTERY PACK WATER TEMPERATURE SENSOR CIRCUIT

Check each battery pack water temperature sensor circuit. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

Replace Li-ion battery controller. Refer to Removal & Installation.

NO>>

Repair or replace malfunctioning parts.

P1b0c-98 Battery Pack Temperature Nissan Ariya 2025

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B0C 98 Battery pack temperature Diagnosis condition Power switch ON
Signal (terminal) Module temperature sensor temperature
Threshold When battery (battery pack) temperature is abnormally high
Diagnosis delay time More than 2 seconds continuously

POSSIBLE CAUSE

Battery pack

FAIL-SAFE

Pattern A: No driving, Charge stop, and EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B0C-98 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

REPLACE LI-ION BATTERY ASSEMBLY.

When "P1B0C-98 is detected, replace Li-ion battery as assembly.

>>

Replace Li-Ion battery. Refer to Removal & Installation.

P1b0c-Fb Battery Pack Temperature Nissan Ariya: FE0

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B0C FB Battery pack temperature Diagnosis condition Power switch ON
Signal (terminal) Module temperature sensor temperature
Threshold When temperature of module temperature sensor exceeds available temperature range.
Diagnosis delay time More than 2 seconds continuously

POSSIBLE CAUSE

Battery pack

FAIL-SAFE

Pattern C: Driving output power limit, Charge limit, and EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B0C-FB detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK DTC DETECTION OF MODULE TEMPERATURE SENSOR SYSTEM

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self Diagnostic Results" of "HIGH VOLTAGE BATTERY".

  3. Check if P1B0C-98 which includes past abnormality is detected.

Is corresponding DTC detected?

YES>>

Replace Li-Ion battery. Refer to Removal & Installation.

NO>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

  1. Power switch ON.

  2. Erase DTC.

    NOTE:

    Erase DTC in order first "HIGH VOLTAGE BATTERY 2" then next "HIGH VOLTAGE BATTERY".

  3. Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is P1B0C-FB detected?

YES>>

Replace Li-ion battery controller. Refer to Removal & Installation.

NO>>

INSPECTION END

P1b0d-41 Li-Ion Battery Controller Nissan Ariya 2025

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B0D 41 Li-ion battery controller Diagnosis condition Power switch ON
Signal (terminal) LBC (CPU)
Threshold When self diagnosis program of internal LBC detects CPU malfunction.
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

LBC

FAIL-SAFE

Pattern D: EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B0D-41 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON.

  2. Erase DTC.

    NOTE:

    Erase DTC in order first "HIGH VOLTAGE BATTERY 2" then next "HIGH VOLTAGE BATTERY".

  3. Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is P1B0D-41 detected?

YES>>

Replace Li-ion battery controller. Refer to Removal & Installation.

NO>>

INSPECTION END

P1b12-04 Asic Nissan Ariya: FE0

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B12 04 ASIC Diagnosis condition Power switch ON
Signal (terminal) ASIC
Threshold When malfunction of cell voltage measuring circuit is detected
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

  • Cell controller (ASIC)

  • Cell voltage detection circuit

FAIL-SAFE

Pattern B: Driving output power limit, Charge stop, and EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B12-04 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON.

  2. Erase DTC.

    NOTE:

    Erase DTC in order first "HIGH VOLTAGE BATTERY 2" then next "HIGH VOLTAGE BATTERY".

  3. Power switch OFF and wait at least 5 minute.

  4. Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is P1B12-04 detected?

YES>>

GO TO 2.

NO>>

INSPECTION END

CHECK CELL CONTROLLER STATUS (DATA MONITOR)

Select "Data Monitor" of "HIGH VOLTAGE BATTERY" and then check the following items.

  • "Cell controller status 01"

  • "Cell controller status 02"

  • "Cell controller status 03"

  • "Cell controller status 04"

  • "Cell controller status 05"

  • "Cell controller status 06"

  • "Cell controller status 07"

  • "Cell controller status 08"

Is "NG" indicated?

YES>>

Replace cell controller which indicates abnormality (Refer to Removal & Installation.), and then GO TO 3.

NO>>

Replace Li-ion battery controller. Refer to Removal & Installation.

ASSEMBLY AND INSTALLATION OF LI-ION BATTERY

Assemble and install Li-ion battery.

>>

GO TO 4.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

  1. Power switch ON.

  2. Erase DTC.

    NOTE:

    Erase DTC in order first "HIGH VOLTAGE BATTERY 2" then next "HIGH VOLTAGE BATTERY".

  3. Power switch OFF and wait at least 5 minute.

  4. Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is P1B12-04 detected?

YES>>

Replace Li-ion battery controller, all cell controllers, and harness between Li-ion battery controller and cell controller. (Never replace parts which replaced during step 2.) Refer to Removal & Installation.

NO>>

INSPECTION END

P1b18-11 Interlock Detecting Switch 1 Nissan Ariya first Gen

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B18 11 Interlock detecting switch 1 Diagnosis condition Power switch ON
Signal (terminal) Interlock detecting switch signal
Threshold When malfunction of inter-lock detection circuit is detected.
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

  • Interlock detecting switch (service plug) circuit

  • Interlock detecting switch (service plug)

  • Service plug improper connection

  • Interlock detecting switch (high voltage harness FR) circuit

  • Interlock detecting switch (high voltage harness FR)

  • High voltage harness (FR) improper connection

FAIL-SAFE

Pattern D: EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B18-11 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK INTERLOCK DETECTING SWITCH CIRCUIT (SERVICE PLUG)

Check interlock detecting switch circuit (service plug). Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace malfunctioning parts.

CHECK INTERLOCK DETECTING SWITCH CIRCUIT (HIGH VOLTAGE HARNESS FRONT)

Check interlock detecting switch circuit (high voltage harness front). Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

Perform intermittent incident. Refer to Intermittent Incident.

NO>>

Repair or replace malfunctioning parts.

P1b19-11 Interlock Detecting Switch 2 Nissan Ariya 2023

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B19 11 Interlock detecting switch 2 Diagnosis condition Power switch ON
Signal (terminal) Interlock detecting switch signal
Threshold When malfunction of inter-lock detection circuit is detected.
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

  • Interlock detecting switch [high voltage harness connector (rear)] circuit

  • Interlock detecting switch [high voltage harness connector (rear)]

  • High voltage harness (rear) improper connection

FAIL-SAFE

Pattern D: EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B19-11 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK INTERLOCK DETECTING SWITCH CIRCUIT [HIGH VOLTAGE HARNESS CONNECTOR (REAR)]

Check interlock detecting switch circuit [high voltage harness connector (rear)]. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

Perform intermittent incident. Refer to Intermittent Incident.

NO>>

Repair or replace malfunctioning parts.

P1b20-87 Relay 4 Control Circuit Nissan Ariya

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B20 87 Relay 4 control circuit Diagnosis condition Power switch ON
Signal (terminal) CAN communication signal
Threshold When data error of CAN communication signal from CPLC is detected
Diagnosis delay time More than 2 seconds continuously

POSSIBLE CAUSE

  • CAN communication circuit

  • CPLC

FAIL-SAFE

Pattern D: EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B20-87 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CAN COMMUNICATION SYSTEN DIAGNOSIS

Perform trouble diagnosis for CAN communication system. Refer to Trouble Diagnosis Flow Chart.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace malfunctioning parts.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

  1. Power switch ON.

  2. Erase DTC.

  3. Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is P1B20-87 detected?

YES>>

Replace CPLC. Refer to CPLC : Removal & Installation.

NO>>

INSPECTION END

P1b30-11 Module Temperature Sensor 1 Nissan Ariya 1st generation

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1B30 11 Module temperature sensor 1 Diagnosis condition Power switch ON
Signal (terminal) Module temperature sensor voltage
Threshold When short circuit of module temperature sensor circuit is detected.
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

  • Module temperature sensor 1 circuit

  • Module temperature sensor 1

FAIL-SAFE

Not applicable

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1B30-11 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK MODULE TEMPERATURE SENSOR CIRCUIT

Check each module temperature sensor circuit (harness connector between cell controller and module. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace malfunctioning parts.

CHECK MODULE TEMPERATURE SENSOR

Check module temperature sensor. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Replace corresponding cell controller. Refer to Removal & Installation.

NO>>

Replace corresponding module. Refer to Disassembly & Assembly.

P1ba1-12 Cell Voltage Circuit Nissan Ariya

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1BA1 12 Cell voltage circuit Diagnosis condition Power switch ON
Signal (terminal) ASIC
Threshold When short circuit of cell voltage measuring circuit is detected
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

  • Cell voltage detection circuit

  • Cell (module)

  • Cell controller

FAIL-SAFE

Pattern B: Driving output power limit, Charge stop, and EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1BA1-12 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK CELL CONTROLLER STATUS

With CONSULT

  1. Power switch ON.

  2. Check "Data Monitor" of "HIGH VOLTAGE BATTERY" and then record the following items;

    • "Cell controller status 01"

    • "Cell controller status 02"

    • "Cell controller status 03"

    • "Cell controller status 04"

    • "Cell controller status 05"

    • "Cell controller status 06"

    • "Cell controller status 07"

    • "Cell controller status 08"

>>

GO TO 2.

CHECK CELL VOLTAGE DETECTION CIRCUIT

Check cell voltage circuit (harness connector between cell controller and module) to which cell controller that indicates abnormality in the recorded "Cell controller status" is connected.

NOTE:

For comparison of cell, module, and cell controller, Refer to Component Description.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace malfunctioning parts.

CHECK CELL VOLTAGE

Check cell voltage included in the module to which cell controller that indicates abnormality in the recorded "Cell controller status" is connected.

NOTE:

For comparison of cell, module, and cell controller, Refer to Component Description.

Is there any cell that voltage is 0.5 V or less?

YES>>

Replace corresponding module.

  • Refer to Disassembly & Assembly.

  • Refer to Disassembly & Assembly.

NO>>

Replace cell controller which indicates abnormality. Refer to Removal & Installation.

P1ba2-49 Battery Voltage Isolation Circuit Nissan Ariya first Gen

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1BA2 49 Battery voltage isolation circuit Diagnosis condition

  • At the time of LBC activation

  • At the time of LBC shut down
Signal (terminal) Insulation resistance
Threshold When malfunction of insulation resistance detection circuit is detected.
Diagnosis delay time 20 seconds or less

POSSIBLE CAUSE

High voltage circuit insulation resistance loss

FAIL-SAFE

Pattern D: EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1BA2-49 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

DANGER:

Since hybrid vehicles and electric vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and Nissan Ariya vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.

WARNING:

  • Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.

  • The removed service plug must always be carried in a pocket of the responsible worker or placed in the tool box during the procedure to prevent the plug from being connected by mistake.

  • Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.

  • Never allow workers other than the responsible person to touch the Nissan Ariya vehicle containing high voltage parts. To keep others from touching the high voltage parts, these parts must be covered with an insulating sheet except when using them.

  • Refer to HIGH VOLTAGE PRECAUTIONS : Precautions.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise instructed in the Service Manual. A malfunction may occur if this is not observed.

When you turned the power switch ON with the service plug removed, be sure to erase all the DTCs after trouble diagnosis.

CHECK EACH HIGH VOLTAGE PARTS VISUALLY

  1. Power switch OFF.

  2. Check visually each high voltage parts for damage.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace malfunctioning parts.

CHECK A/C REFRIGERANT GAS

Interview the customer, check maintenance history, and confirm possibility if there is something other than the specified gas for EV is mixed in the A/C. refrigerant gas.

NOTE:

If the A/C refrigerant gas is not specified for EV, insulation may decrease.

Is refrigerant gas abnormal?

YES>>

Replace A/C refrigerant gas and electric compressor oil. Refer to Recycle Refrigerant and Charge Refrigerant.

NO>>

GO TO 3.

PRECONDITIONING

WARNING:

Follow the instructions below before starting the procedure.

  1. Disconnect high voltage circuit. Refer to HOW TO DISCONNECT HIGH VOLTAGE : Precautions.

  2. Check voltage in high voltage circuit. Refer to CHECK VOLTAGE IN HIGH VOLTAGE CIRCUIT : Precautions.

>>

GO TO 4.

CHECK HIGH VOLTAGE HARNESS INSULATION OF LI-ION BATTERY (QUICK CHARGE PORT)

WARNING:

Unlike the ordinary tester, the insulation resistance tester applies 500 V when measuring. If used incorrectly, there is the danger of electric shock. If used in the Nissan Ariya vehicle 12 V system, there is the danger of damage to electronic devices. Read the insulation resistance tester instruction manual carefully and be sure to work safely.

  1. Disconnect Li-ion battery (quick charge port) high voltage harness connector (H104).

  2. Check the insulation resistance of high voltage harness with an insulation resistance tester (Multitester), between Li-ion battery and ground.

CAUTION:

  • Use 500 V range of insulation resistance tester to measure insulation resistance.

  • If higher than 500V is applied to EV control system, the system may be damaged.

  • Wait for 30 seconds until the value becomes stable.

    + − Resistance
    Li-ion battery (quick charge port)
    Connector Terminal
    H104 42 Ground 5.6 MΩ or more
    43

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Replace high voltage harness of Li-Ion battery (charge port). Refer to CHARGE PORT : Removal & Installation.

CHECK INSULATION HIGH VOLTAGE HARNESS OF LI-ION BATTERY [INVERTER (FRONT)]

WARNING:

Unlike the ordinary tester, the insulation resistance tester applies 500 V when measuring. If used incorrectly, there is the danger of electric shock. If used in the Nissan Ariya vehicle 12 V system, there is the danger of damage to electronic devices. Read the insulation resistance tester instruction manual carefully and be sure to work safely.

  1. Disconnect Li-ion battery (quick charge port) high voltage harness connector (H5).

  2. Check the insulation resistance of high voltage harness with an insulation resistance tester (Multitester), between Li-ion battery and ground.

CAUTION:

  • Use 500 V range of insulation resistance tester to measure insulation resistance.

  • If higher than 500V is applied to EV control system, the system may be damaged.

  • Wait for 30 seconds until the value becomes stable.

    + − Resistance
    Li-ion battery [Inverter (front)]
    Connector Terminal
    H5 37 Ground 5.6 MΩ or more
    38

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Replace high voltage harness of Li-ion battery [inverter (front)]. Refer to INVERTER (FRONT) : Removal & Installation.

CHECK INSULATION RESISTANCE OF ELECTRIC COMPRESSOR

Check insulation of electric compressor. Refer to Insulation Resistance Check.

CAUTION:

  • Since testers are polarized, check the polarity of the tester and connect it in the forward direction to the circuit.

  • If the inspection results show no continuity, check the parts for proper installation.

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

Replace electric compressor. Refer to Removal & Installation.

CHECK INSULATION RESISTANCE OF PTC HEATER

Check insulation resistance of PTC heater. Refer to Insulation Resistance Check.

CAUTION:

  • Since testers are polarized, check the polarity of the tester and connect it in the forward direction to the circuit.

  • If the inspection results show no continuity, check the parts for proper installation.

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

Replace PTC heater. Refer to Removal & Installation.

CHECK INSULATION RESISTANCE OF HIGH VOLTAGE JUNCTION BOX

Check insulation resistance of high voltage junction box. Refer to Diagnosis Procedure.

CAUTION:

  • Since testers are polarized, check the polarity of the tester and connect it in the forward direction to the circuit.

  • If the inspection results show no continuity, check the parts for proper installation.

Is the inspection result normal?

YES>>

GO TO 9.

NO>>

Replace high voltage junction box. Refer to HIGH VOLTAGE JUNCTION BOX : Disassembly & Assembly.

CHECK INSULATION RESISTANCE OF DC/DC CONVERTER

Check insulation resistance of DC/DC converter. Refer to Diagnosis Procedure.

CAUTION:

  • Since testers are polarized, check the polarity of the tester and connect it in the forward direction to the circuit.

  • If the inspection results show no continuity, check the parts for proper installation.

Is the inspection result normal?

YES>>

GO TO 10.

NO>>

Replace DC/DC converter. Refer to DC/DC CONVERTER : Disassembly & Assembly.

CHECK INSULATION RESISTANCE OF ON-BOARD CHARGER

Check insulation resistance of on-board charger. Refer to Diagnosis Procedure.

CAUTION:

  • Since testers are polarized, check the polarity of the tester and connect it in the forward direction to the circuit.

  • If the inspection results show no continuity, check the parts for proper installation.

Is the inspection result normal?

YES>>

GO TO 11.

NO>>

Replace on-board charger. Refer to ON-BOARD CHARGER : Disassembly & Assembly.

CHECK INSULATION RESISTANCE OF INVERTER (FRONT)

Check insulation resistance of inverter (front). Refer to Component Inspection.

CAUTION:

  • Since testers are polarized, check the polarity of the tester and connect it in the forward direction to the circuit.

  • If the inspection results show no continuity, check the parts for proper installation.

Is the inspection result normal?

YES>>

GO TO 12.

NO>>

Replace inverter (front). Refer to INVERTER (FRONT) : Removal & Installation.

CHECK INSULATION RESISTANCE OF TRACTION MOTOR.

Check insulation resistance of traction motor. Refer to Component Inspection.

CAUTION:

  • Since testers are polarized, check the polarity of the tester and connect it in the forward direction to the circuit.

  • If the inspection results show no continuity, check the parts for proper installation.

Is the inspection result normal?

YES>>

GO TO 13.

NO>>

Replace traction motor. Refer to FRONT TRACTION MOTOR : Removal & Installation.

CHECK INSULATION RESISTANCE OF LI-ION BATTERY

Check insulation resistance of Li-ion battery. Refer to Diagnosis Procedure.

CAUTION:

  • Since testers are polarized, check the polarity of the tester and connect it in the forward direction to the circuit.

  • If the inspection results show no continuity, check the parts for proper installation.

Is the inspection result normal?

YES>>

Replace Li-ion battery controller. Refer to Removal & Installation.

NO>>

Repair or replace malfunctioning parts.

P1bb1-08 Li-Ion Battery Communication Nissan Ariya SUV

DTC Description

DTC DETECTION LOGIC

DTC CONSULT screen terms DTC detection condition
P1BB1 08 Li-ion battery communication Diagnosis condition Power switch ON
Signal (terminal) ASIC
Threshold When communication malfunction of internal LBC is detected
Diagnosis delay time 2 seconds or less

POSSIBLE CAUSE

LBC

FAIL-SAFE

Pattern B: Driving output power limit, Charge stop, and EV system warning lamp illuminate

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait at least 2 seconds.

  2. Check "Self diagnosis Results" of "HIGH VOLTAGE BATTERY" and "HIGH VOLTAGE BATTERY 2".

Is P1BB1-08 detected?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK CELL CONTROLLER STATUS.

With CONSULT

  1. Power switch ON.

  2. Check "Data Monitor" of "HIGH VOLTAGE BATTERY" and then record the following items;

    • "Cell controller status 01"

    • "Cell controller status 02"

    • "Cell controller status 03"

    • "Cell controller status 04"

    • "Cell controller status 05"

    • "Cell controller status 06"

    • "Cell controller status 07"

    • "Cell controller status 08"

>>

GO TO 2.

CHECK CONTINUITY BETWEEN LBC AND CELL CONTROLLER HARNESS

Check cell controller communication circuit (continuity of harness between LBC and cell controller). Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace malfunctioning parts.

JUGE CELL CONTROLLER STATUS

Check recorded cell controller status 01 to cell controller status08.

Is NG indicated?

YES>>

Replace cell controller that displayed abnormality Refer to Removal & Installation.. and GO TO 4.

NO>>

Replace Li-ion battery controller. Refer to Removal & Installation. and GO TO 4.

ASSEMBLY AND INSTALLATION OF LI-ION BATTERY

Assemble and install Li-ion battery.

>>

GO TO 5.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

  1. Power switch ON.

  2. Erase DTC.

    NOTE:

    Erase DTC in order first "HIGH VOLTAGE BATTERY 2" then next "HIGH VOLTAGE BATTERY".

  3. Power switch OFF and wait at least 5 minute.

  4. Perform DTC confirmation procedure again. Refer to Confirmation Procedure.

Is P1BB1-08 detected?

YES>>

Replace Li-ion battery controller, all cell controllers, and harness between Li-ion battery controller and cell controller. (Parts that replaced at step 3 are not required to replace). Refer to Removal & Installation.

NO>>

INSPECTION END

 
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Nissan Ariya (FE0) 2023-2025 Service & Repair Manual

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