Engine Control Module

NOTE: If the ECM detects and stores a DTC, the ECM also stores the engine/vehicle operating conditions under which the DTC was set. Some of these conditions are displayed on the scan tool at the same time the DTC is displayed.

NOTE: Before erasing stored DTCs, record these conditions. Attempting to duplicate these conditions may assist when checking for an active DTC.

NOTE: If there are other DTCs set with this DTC repair other DTCs before continuing with this diagnostic procedure.

NOTE: This code can be caused by an intermittent problem in the wiring and connectors to the Engine Control Module. Inspect the Engine Control Module harness connector and associated wiring for signs of poor terminal contact.

Turn the ignition on.
With the scan tool, erase ECM DTCs.
Perform several engine run cycles, turning the ignition off for at least 20 seconds between each engine run cycle.
With the scan tool, read the ECM DTCs.
Did this DTC set again?

Yes
- Replace and program the Engine Control Module STANDARD PROCEDURE .
- Perform ECM VERIFICATION TEST .
No
- Perform *INTERMITTENT DTC .