Possible Causes
| Possible Causes |
|---|
| PURGE SOLENOID VACUUM SUPPLY HOSE |
| VERY LARGE EVAP SYSTEM LEAK |
| EVAP PURGE HOSE/TUBE OBSTRUCTION |
| ESIM FILTER OR TUBE RESTRICTION |
| ESIM SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE |
| ESIM GROUND CIRCUIT OPEN OR HIGH RESISTANCE |
| EVAP PURGE SOLENOID |
| EVAPORATIVE SYSTEM INTEGRITY MONITOR (ESIM) SWITCH |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .