Possible Causes
WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| FUSED RUN/START CIRCUIT OPEN |
| VACUUM PUMP RELAY CONTROL CIRCUIT OPEN/HIGH RESISTANCE |
| VACUUM PUMP RELAY CONTROL CIRCUIT SHORTED TO GROUND |
| ELECTRIC VACUUM PUMP (EVP) RELAY |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .