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Home >> Buick >> 2016 >> Verano Base, Gas/Ethanol >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls And Fuel - 2.4L (Lea) - DTC P0335 To DTC P2635 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P0601-P0604, P0606, P062B, P062F, P0630, P16F3, or P262B: Control Module (ECM) >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON, clear the DTC information with a scan tool.
  2. Verify no other DTCs are set.
    • If no other DTCs are set 
  3. Verify DTC P0602 or P0630 is not set.
    • If any of the DTCs are set 
    1. Program the K20 Engine Control Module. Refer to Control Module References .
    2. Verify DTC P0602 or P0630 is not set.
      • If any of the DTCs are set, replace the K20 Engine Control Module.
      • If none of the DTCs are set
    3. All OK.
    • If none of the DTCs are set 
  4. Verify DTC P0601, P0603, P0604, P0606, P062B, P062F, P16F3, or P262B is not set.
    • If any of the DTCs are set 

      Replace the K20 Engine Control Module.

    • If none of the DTCs are set 
  5. All OK.
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