Possible Causes

Always perform the Pre-Diagnostic Troubleshooting Procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  . 

1. POSSIBLE CAUSES 
   1. This DTC is an informational DTC only.
   2. This DTC is set due to a momentary loss of power and/or the ground circuits to the PCM.
   3. Below are a list of possible causes associated with this DTC.
   4. Battery was disconnected.
   5. The Battery Disconnect feature (if equipped) on the scan tool was performed.
   6. The Quick Learn feature on the scan tool was performed.
   7. PCM was replaced or disconnected.

      Were any of the above possible causes performed?

      Yes 

      • This is the cause of the DTC. Erase the DTC and return vehicle to customer.
      • Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

      No 

      • Go to step  2
2. CHECK WIRING AND CONNECTORS 
   1. The conditions necessary to set this DTC are not present at this time.
   2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
      NOTE: Check all power and ground circuits to the PCM for a intermittent or high resistance condition.
   3. Wiggle the wires while checking for shorted and open circuits.
   4. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set.

      Where there any problems found?

      Yes 

      • Repair as necessary.
      • Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .

      No 

      • Test Complete.