Diagnostic Test
WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
CHECK THE POWER AND GROUND CIRCUITS
- This DTC is set when the transmission portion of the PCM is initialized while the vehicle is moving down the road in a valid forward gear.
- Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Check all of the Fused B (+), Fused Ignition Switch Output and ground circuits to the PCM for an intermittent open or short to ground.
- With the scan tool, check the Event Data to help identify the conditions in which the DTC set.
Repair
- Check all power and ground circuits to the PCM and repair as necessary.
- Perform the TRANSMISSION VERIFICATION TEST. Refer to 66RFE TRANSMISSION VERIFICATION TEST .