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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 P1255: Fuel Pump Control Module Driver Over Temperature (Fuel Pump Power Control Module) >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON.
  2. Verify DTC P0231, P0232, or P023F is not set.
    • If none of the DTCs are set 
  3. Verify that the area where the K111 Fuel Pump Power Control Module is located is free of debris, clutter, or any insulating material that would cause the fuel pump power control module to overheat.
    • If any debris, clutter, or other material is found 
    1. Clear the area where the K111 Fuel Pump Power Control Module is located.
    2. Clear the DTC and test drive the vehicle.
    3. Verify DTC P1255 is not set.
      • If DTC P1255 is set, replace the K111 Fuel Pump Power Control Module.
      • If DTC P1255 is not set
    4. All OK.
    • If no debris, clutter, or other material is found 
  4. Clear the DTC and test drive the vehicle.
  5. Verify DTC P1255 is not set.
    • If DTC P1255 is set 

      Replace the K111 Fuel Pump Power Control Module.

    • If DTC P1255 is not set. 
  6. All OK.
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