Possible Causes
| Possible Causes |
|---|
| HIGH RESISTANCE IN THE FTP SENSOR 5-VOLT SUPPLY CIRCUIT |
| HIGH RESISTANCE IN THE FTP SENSOR SIGNAL CIRCUIT |
| HIGH RESISTANCE IN THE FTP SENSOR RETURN CIRCUIT |
| BLOCKAGE/FLASH AT THE PORTS ON THE CAC DUCT AND THE AIR CLEANER |
| EVAPORATIVE PURGE HOSE/TUBE AND AIR FILTER OBSTRUCTION |
| PURGE TUBE BETWEEN THE PURGE SOLENOID AND EJECTOR TEE LEAKING OR OBSTRUCTED |
| TUBE BETWEEN THE CHARGE AIR COOLER DUCT AND EJECTOR TEE LEAKING OR OBSTRUCTED |
| PURGE HOSE/TUBE OR FRESH AIR FILTER OBSTRUCTION |
| EJECTOR TEE MALFUNCTION |
| FUEL TANK PRESSURE SENSOR |
| PURGE SOLENOID |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .