Possible Causes
WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| (C18) A/C PRESSURE SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| (C18) A/C PRESSURE SIGNAL CIRCUIT OPEN |
| (C18) A/C PRESSURE SIGNAL CIRCUIT SHORTED TO THE (C818) 5-VOLT SUPPLY CIRCUIT |
| (C918) A/C PRESSURE GROUND CIRCUIT OPEN |
| A/C PRESSURE TRANSDUCER |
| TOTALLY INTEGRATED POWER MODULE (TIPM) |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .