When Monitored And Set Conditions
WARNING: This page is about a different car, the 2024 Jeep Grand Wagoneer L and 2024 Jeep Grand Wagoneer. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic runs continuously when the following conditions are met:
- With the ignition on.
- No Battery system voltage or ASD Relay DTCs present.
- The OBD Vent Valve is commanded off.
Set Conditions:
- The Powertrain Control Module (PCM) detects that the OBD Vent Valve Control circuit voltage is below a calibrated threshold.
Default Actions:
- The MIL will illuminate.
| Possible Causes |
|---|
| OBD VENT VALVE CONTROL CIRCUIT SHORTED TO GROUND |
| OBD VENT VALVE |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .