Possible Causes
WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| J1939 DATALINK (+) CIRCUIT SHORTED TO BATTERY OR GROUND |
| J1939 DATALINK (-) CIRCUIT SHORTED TO BATTERY OR GROUND |
| J1939 DATALINK (+) CIRCUIT OPEN/HIGH RESISTANCE |
| J1939 DATALINK (-) CIRCUIT OPEN/HIGH RESISTANCE |
| DEF DOSING CONTROL UNIT |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to STANDARD PROCEDURE .