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Home >> Chevrolet >> 2021 >> Bolt EV Premier >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Hybrid/EV Controls >> Diagnostic Information and Procedures >> DTC P16FF >> Circuit/System Verification
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Circuit/System Verification

  1. Run the vehicle in propulsion system active mode for 1 minute, then vehicle OFF for 30 seconds.
  2. Verify DTC P16FF is not set.
    • If the DTC is set 
    1. Verify the K20 ECM has the latest calibration in Calibration Information.
      • If the K20 ECM does not have the latest calibration, program the K20 ECM.
      • If the K20 ECM has the latest calibration, replace the K20 ECM.
    2. Verify the DTC does not set.
      • If the DTC is set, replace the K20 ECM.
      • Go to next step: If the DTC does not set
    3. All OK.
    • Go to next step: If the DTC is not set 
  3. All OK.
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