LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2023 >> NX 250 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Hybrid Battery System - Diagnostic Codes (2 Of 2) & Circuit Tests) >> Hybrid Battery System >> DTC P1A80-00: Hybrid/EV Battery Stack 1 Delta SOC High; DTC P1A85-00: Hybrid/EV Battery Stack 2 Delta SOC High [11/2021 - ] >> Procedure

DTC P1A80-00: Hybrid/EV Battery Stack 1 Delta SOC High; DTC P1A85-00: Hybrid/EV Battery Stack 2 Delta SOC High [11/2021 - ]: Procedure

WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL) 
    1. Check for DTCs.

      Powertrain > HV Battery > Trouble Codes 

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      "P1A80-00 or P1A85-00" only is output, or DTCs except the ones in the table below are also output. A
      DTCs of hybrid battery system in the table below are output. B
      DTCs of hybrid control system in the table below are output. C
      System Relevant DTC
      Hybrid battery system P060A-47 Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
      P060B-49 Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
      P0606-87 Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
      P0ABF-28 Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure
      P0ABF-2A Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range
      P1CBB-12 Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Auxiliary Battery
      P1CBB-14 Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Ground or Open
      P1CC8-1E Hybrid/EV Battery Stack 1 Voltage Difference Out of Range
      P1CC9-1E Hybrid/EV Battery Stack 2 Voltage Difference Out of Range
      Hybrid control system P0A1F-94 Hybrid/EV Battery Energy Control Module Unexpected Operation
      P0B23-1C Hybrid/EV Battery "A" Voltage Sensor Voltage Out of Range
      P1C2D-62 Hybrid/EV Battery "A" Voltage Sensor/ Boosting Converter Voltage Sensor "A" Signal Compare Failure
    2. Turn the ignition switch off.

    Result: 

    B 

    GO TO DTC CHART (HYBRID BATTERY SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2021 - ] 

    Result: 

    C 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) 

    Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2021 - 03/2024] , or refer to DIAGNOSTIC TROUBLE CODE CHART [03/2024 - ]

    Result: 

    A 

    See step  2

  2. CHECK DTC 
    1. Check the DTCs that were output when the vehicle was brought to the workshop.

      Result

      Result Proceed to
      "P1A80-00" is also output. A
      "P1A85-00" is also output. B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  3

  3. CHECK FREEZE FRAME DATA (HYBRID/EV BATTERY CELL VOLTAGE) 
    1. Read the value of freeze frame data items "Hybrid/EV Battery Cell 1 Voltage" through "Hybrid/EV Battery Cell 35 Voltage" for DTC P1A80-00 and make a note if the value of any is the lowest voltage value.

      Powertrain > HV Battery > Trouble Codes 

    2. Turn the ignition switch off.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK BATTERY ECU ASSEMBLY (GA0 - VA35) 
    NOTE:

    Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance.

    1. Remove the battery ECU assembly.

      Refer to REMOVAL [11/2021 - ]

    2. Measure the resistance according to the value(s) in the table below.

      HINT: 

      Only inspect the terminals of the battery ECU assembly which correspond to the HV battery cells which measured the lowest voltage value in the previous step.

      GTY1052431Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Battery ECU Assembly)      		 - -

      Standard Resistance

      HV Battery Cell Tester Connection
      (Tester Probe Polarity)      		 Condition Specified Condition
      1 z13-1 (GA0) (-) - z13-13 (VA1) (+) Always 50 kΩ or more
      2 z13-13 (VA1) (-) - z13-25 (VA2) (+) Always 50 kΩ or more
      3 z13-25 (VA2) (-) - z13-2 (VA3) (+) Always 50 kΩ or more
      4 z13-2 (VA3) (-) - z13-14 (VA4) (+) Always 50 kΩ or more
      5 z13-14 (VA4) (-) - z13-26 (VA5) (+) Always 50 kΩ or more
      6 z13-26 (VA5) (-) - z13-3 (VA6) (+) Always 50 kΩ or more
      7 z13-3 (VA6) (-) - z13-15 (VA7) (+) Always 50 kΩ or more
      8 z13-15 (VA7) (-) - z13-27 (VA8) (+) Always 50 kΩ or more
      9 z13-27 (VA8) (-) - z13-4 (VA9) (+) Always 50 kΩ or more
      10 z13-4 (VA9) (-) - z13-16 (VA10) (+) Always 50 kΩ or more
      11 z13-16 (VA10) (-) - z13-28 (VA11) (+) Always 50 kΩ or more
      12 z13-28 (VA11) (-) - z13-5 (VA12) (+) Always 50 kΩ or more
      13 z13-5 (VA12) (-) - z13-17 (VA13) (+) Always 50 kΩ or more
      14 z13-17 (VA13) (-) - z13-29 (VA14) (+) Always 50 kΩ or more
      15 z13-29 (VA14) (-) - z13-6 (VA15) (+) Always 50 kΩ or more
      16 z13-6 (VA15) (-) - z13-18 (VA16) (+) Always 50 kΩ or more
      17 z13-18 (VA16) (-) - z13-30 (VA17) (+) Always 50 kΩ or more
      18 z13-30 (VA17) (-) - z13-7 (VA18) (+) Always 50 kΩ or more
      19 z13-7 (VA18) (-) - z13-19 (VA19) (+) Always 50 kΩ or more
      20 z13-19 (VA19) (-) - z13-31 (VA20) (+) Always 50 kΩ or more
      21 z13-31 (VA20) (-) - z13-8 (VA21) (+) Always 50 kΩ or more
      22 z13-8 (VA21) (-) - z13-20 (VA22) (+) Always 50 kΩ or more
      23 z13-20 (VA22) (-) - z13-32 (VA23) (+) Always 50 kΩ or more
      24 z13-32 (VA23) (-) - z13-9 (VA24) (+) Always 50 kΩ or more
      25 z13-9 (VA24) (-) - z13-21 (VA25) (+) Always 50 kΩ or more
      26 z13-21 (VA25) (-) - z13-33 (VA26) (+) Always 50 kΩ or more
      27 z13-33 (VA26) (-) - z13-10 (VA27) (+) Always 50 kΩ or more
      28 z13-10 (VA27) (-) - z13-22 (VA28) (+) Always 50 kΩ or more
      29 z13-22 (VA28) (-) - z13-34 (VA29) (+) Always 50 kΩ or more
      30 z13-34 (VA29) (-) - z13-11 (VA30) (+) Always 50 kΩ or more
      31 z13-11 (VA30) (-) - z13-23 (VA31) (+) Always 50 kΩ or more
      32 z13-23 (VA31) (-) - z13-35 (VA32) (+) Always 50 kΩ or more
      33 z13-35 (VA32) (-) - z13-12 (VA33) (+) Always 50 kΩ or more
      34 z13-12 (VA33) (-) - z13-24 (VA34) (+) Always 50 kΩ or more
      35 z13-24 (VA34) (-) - z13-36 (VA35) (+) Always 50 kΩ or more
      NOTE:
      • Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.
      • Read the resistance after the value has stabilized.
      • In order to avoid damaging the terminals of the battery ECU assembly, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance of the battery ECU assembly.
    3. Install the battery ECU assembly.

      Result

      Result Proceed to
      The voltage between the terminals is 50 kΩ or more. A
      Other than above B

    Result: 

    B 

    REPLACE BATTERY ECU ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result: 

    A 

    See step  5

  5. CHECK TOTAL DISTANCE DRIVEN 
    1. Read the odometer to check the total distance the vehicle has been driven.

      Result

      Result Proceed to
      Total distance driven is less than 200000 km (124280 mile) A
      Total distance driven is 200000 km (124280 mile) or more Current total distance driven - total distance driven when hybrid battery terminal block replaced = less than 200000 km (124280 mile) *1
      Other than above B

      HINT: 

      *1: If the hybrid battery terminal block has been replaced, use the total distance driven since it was replaced.

    Result: 

    A 

    REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result: 

    B 

    See step  6

  6. REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    REPLACE HYBRID BATTERY TERMINAL BLOCK 

    Refer to REMOVAL [11/2021 - ]

  7. CHECK FREEZE FRAME DATA (HYBRID/EV BATTERY CELL VOLTAGE) 
    1. Read the value of freeze frame data items "Hybrid/EV Battery Cell 36 Voltage" through "Hybrid/EV Battery Cell 70 Voltage" for DTC P1A85-00 and make a note if the value of any is the lowest voltage value.

      Powertrain > HV Battery > Trouble Codes 

    2. Turn the ignition switch off.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  8

  8. CHECK BATTERY ECU ASSEMBLY (VAD - VA70) 
    NOTE:

    Make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance.

    1. Remove the battery ECU assembly.

      Refer to REMOVAL [11/2021 - ]

    2. Measure the resistance according to the value(s) in the table below.

      HINT: 

      Only inspect the terminals of the battery ECU assembly which correspond to the HV battery cells which measured the lowest voltage value in the previous step.

      GTY1052438Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Battery ECU Assembly)      		 - -

      Standard Resistance

      HV Battery Cell Tester Connection
      (Tester Probe Polarity)      		 Condition Specified Condition
      36 z10-1 (VAD) (-) - z10-13 (VA36) (+) Always 50 kΩ or more
      37 z10-13 (VA36) (-) - z10-25 (VA37) (+) Always 50 kΩ or more
      38 z10-25 (VA37) (-) - z10-2 (VA38) (+) Always 50 kΩ or more
      39 z10-2 (VA38) (-) - z10-14 (VA39) (+) Always 50 kΩ or more
      40 z10-14 (VA39) (-) - z10-26 (VA40) (+) Always 50 kΩ or more
      41 z10-26 (VA40) (-) - z10-3 (VA41) (+) Always 50 kΩ or more
      42 z10-3 (VA41) (-) - z10-15 (VA42) (+) Always 50 kΩ or more
      43 z10-15 (VA42) (-) - z10-27 (VA43) (+) Always 50 kΩ or more
      44 z10-27 (VA43) (-) - z10-4 (VA44) (+) Always 50 kΩ or more
      45 z10-4 (VA44) (-) - z10-16 (VA45) (+) Always 50 kΩ or more
      46 z10-16 (VA45) (-) - z10-28 (VA46) (+) Always 50 kΩ or more
      47 z10-28 (VA46) (-) - z10-5 (VA47) (+) Always 50 kΩ or more
      48 z10-5 (VA47) (-) - z10-17 (VA48) (+) Always 50 kΩ or more
      49 z10-17 (VA48) (-) - z10-29 (VA49) (+) Always 50 kΩ or more
      50 z10-29 (VA49) (-) - z10-6 (VA50) (+) Always 50 kΩ or more
      51 z10-6 (VA50) (-) - z10-18 (VA51) (+) Always 50 kΩ or more
      52 z10-18 (VA51) (-) - z10-30 (VA52) (+) Always 50 kΩ or more
      53 z10-30 (VA52) (-) - z10-7 (VA53) (+) Always 50 kΩ or more
      54 z10-7 (VA53) (-) - z10-19 (VA54) (+) Always 50 kΩ or more
      55 z10-19 (VA54) (-) - z10-31 (VA55) (+) Always 50 kΩ or more
      56 z10-31 (VA55) (-) - z10-8 (VA56) (+) Always 50 kΩ or more
      57 z10-8 (VA56) (-) - z10-20 (VA57) (+) Always 50 kΩ or more
      58 z10-20 (VA57) (-) - z10-32 (VA58) (+) Always 50 kΩ or more
      59 z10-32 (VA58) (-) - z10-9 (VA59) (+) Always 50 kΩ or more
      60 z10-9 (VA59) (-) - z10-21 (VA60) (+) Always 50 kΩ or more
      61 z10-21 (VA60) (-) - z10-33 (VA61) (+) Always 50 kΩ or more
      62 z10-33 (VA61) (-) - z10-10 (VA62) (+) Always 50 kΩ or more
      63 z10-10 (VA62) (-) - z10-22 (VA63) (+) Always 50 kΩ or more
      64 z10-22 (VA63) (-) - z10-34 (VA64) (+) Always 50 kΩ or more
      65 z10-34 (VA64) (-) - z10-11 (VA65) (+) Always 50 kΩ or more
      66 z10-11 (VA65) (-) - z10-23 (VA66) (+) Always 50 kΩ or more
      67 z10-23 (VA66) (-) - z10-35 (VA67) (+) Always 50 kΩ or more
      68 z10-35 (VA67) (-) - z10-12 (VA68) (+) Always 50 kΩ or more
      69 z10-12 (VA68) (-) - z10-24 (VA69) (+) Always 50 kΩ or more
      70 z10-24 (VA69) (-) - z10-36 (VA70) (+) Always 50 kΩ or more
      NOTE:
      • Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.
      • Read the resistance after the value has stabilized.
      • In order to avoid damaging the terminals of the battery ECU assembly, make sure to use tester probes with a diameter of approximately 0.5 mm (0.0197 in.) when measuring the resistance of the battery ECU assembly.
    3. Install the battery ECU assembly.

      Result

      Result Proceed to
      The voltage between the terminals is 50 kΩ or more. A
      Other than above B

    Result: 

    B 

    REPLACE BATTERY ECU ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result: 

    A 

    See step  9

  9. CHECK TOTAL DISTANCE DRIVEN 
    1. Read the odometer to check the total distance the vehicle has been driven.

      Result

      Result Proceed to
      Total distance driven is less than 200000 km (124280 mile) A
      Total distance driven is 200000 km (124280 mile) or more Current total distance driven - total distance driven when hybrid battery terminal block replaced = less than 200000 km (124280 mile) *1
      Other than above B

      HINT: 

      *1: If the hybrid battery terminal block has been replaced, use the total distance driven since it was replaced.

    Result: 

    A 

    REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result: 

    B 

    See step  10

  10. REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    REPLACE HYBRID BATTERY TERMINAL BLOCK 

    Refer to REMOVAL [11/2021 - ]

scientia non olet · About LEMON Manuals