Possible Causes
| Possible Causes |
|---|
| MAKEUP AIR SOLENOID CONTROL CIRCUIT OPEN/HIGH RESISTANCE |
| GROUND CIRCUIT OPEN/HIGH RESISTANCE |
| MAKEUP AIR SOLENOID |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .