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 |
|---|
| (F856) 5-VOLT SUPPLY CIRCUIT OPEN |
| LINE PRESSURE SENSOR CONNECTION |
| (T118) LP VFS CONTROL CIRCUIT OPEN |
| (F856) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND |
| (T118) LP VFS CONTROL CIRCUIT SHORTED TO GROUND |
| (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT |
| LINE PRESSURE SENSOR |
| STUCK OR STICKING MAIN REGULATOR VALVE |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to STANDARD PROCEDURE .