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Home >> Chevrolet >> 2022 >> Bolt EV >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Hybrid/EV Energy (Storage) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P0BBE >> Circuit/System Verification

Circuit/System Verification

    NOTE:

    DO NOT CLEAR DTCs without first reviewing the K114B hybrid/EV powertrain control module 2 freeze frame and failure records. The failure record parameters contain the only indication as to the location of the failed Cell Battery Module Row. Clearing DTC Information will reset the diagnostic and it may take many weeks of driving for the DTC to pass/fail again.

  1. Vehicle in Service Mode.
  2. Observe the following K114B hybrid/EV powertrain control module 2 parameters:
    • Hybrid/Electric Vehicle Battery Pack Voltage Variation - Cell Battery Module Row 1
    • Hybrid/Electric Vehicle Battery Pack Voltage Variation - Cell Battery Module Row 2
    • Hybrid/Electric Vehicle Battery Pack Voltage Variation - Cell Battery Module Row 3
    • Hybrid/Electric Vehicle Battery Pack Voltage Variation - Cell Battery Module Row 4
    • Hybrid/Electric Vehicle Battery Pack Voltage Variation - Cell Battery Module Row 5
  3. Verify that a parameter indicates a FAILED condition.
    • A parameter indicates a Failed condition 

      Record the number of the failed cell battery module row. Refer to Circuit/System Testing.

    • Go to next step: No parameter indicates a Failed condition 
  4. All OK.
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