DTC 45, EGR Vent Error - "G" Series: Notes
When PCM recognizes operating range for no EGR, PCM energizes EGR vent solenoid which allows rapid venting of EGR vacuum. This solenoid is normally open. DTC 45 will set when:
- Ignition voltage is present on EGR vent control circuit when EGR vent is commanded on.
Or
- No ignition voltage is present on EGR vent control circuit when EGR vent is commanded off.
PCM will default to shut off EGR system.
NOTE:
Test numbers refer to numbers on diagnostic chart.
- This step determines if DTC 45 is result of a hard failure or an intermittent condition.
- This step checks if PCM and wiring are okay.
- This step checks power and control circuits.