Possible Causes
WARNING: This page is about a different car, the 2002 Nissan Xterra and 2002 Nissan Frontier. However, it is still accessible from the selected car via links, so may be relevant.
Malfunction is detected when no EGR flow is detected under conditions that call for EGR. Possible causes are:
- EGR valve stuck closed.
- EGR Control Backpressure Transducer (EGRC-BPT) valve.
- Vacuum hose.
- EGRC solenoid valve.
- EGR passage.
- EGR temperature sensor.
- Exhaust gas leaks.
NOTE:
For best results, perform DTC confirmation test when ambient temperature is more than 41°F (5°C).