Diagnosis Procedure
WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DTC PRIORITY
- Turn ignition switch ON.
- Connect CONSULT and check for "ENGINE" diagnostic trouble codes.
- Check for DTC P1C55-00 being current on the CONSULT screen.
Is applicable DTC detected?
YES
GO TO 2 .
NO
Refer to Intermittent Incident .
- CHECK DTC PRIORITY
Check for DTCS U029D-00, P2201-00, P2202-00, P2209-00 or P220A-00 being current on the CONSULT screen.
Is applicable DTC detected?
YES
Refer to DTC Index .
NO
GO TO 3 .
- CHECK EGR SYSTEM FOR LEAKS
Inspect the EGR system for external leaks:
- Leaks should be easily noted by traces of soot.
- If necessary, run the engine at idle speed to help detect any leaks.
Are any leaks detected?
YES
Repair or replace leaking EGR system component.
NO
Replace the intake NOx sensor. Refer to Removal and Installation .