Diagnostic Aids

To verify repair or to determine if condition is intermittent, monitor OBD-II test status for Code P0175.

1. Ignition may have to be cycled a couple of times to build pressure.
2. MAF sensor could cause a rich condition. If rich condition no longer exists, replace MAF sensor.
3. If sensors appear to be contaminated, condition causing contamination must be repaired before installing new sensors.