Circuit/System Verification

Ignition ON.
Verify no other DTCs are set.
- If any other DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
- If no other DTCs are set
Verify DTC P0171 or P0172 is not set.
- If a DTC is set
  Refer to Circuit/System Testing.
- If no DTC is set
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed in the Freeze Frame/Failure Records data.
Verify DTC P0171 or P0172 is not set.
- If any of the DTCs set
  Refer to Circuit/System Testing.
- If none of the DTCs set
All OK.