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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Controls And Fuel - 2.4L - DTC P0628 To DTC P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0AC4: Hybrid/EV Powertrain Control Module Requested MIL Illumination >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
NOTE:

Correct any engine control DTCs before diagnosing hybrid powertrain control module DTCs.

  1. Verify there are no engine control or communication DTCs set.
    • If a DTC is not set 
  2. Verify there are no hybrid/EV powertrain control module DTCs set.
    • If a DTC is not set 
  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  4. Verify the DTCs does not set.
    • If the DTC does not set 
  5. All OK.
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