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 FOR CURRENT DTC
- Turn ignition switch ON.
- Connect CONSULT and check for existing "ENGINE" diagnostic trouble codes.
- Check for DTC P20FF-00 current on the CONSULT screen.
Is applicable DTC current?
YES
GO TO 2 .
NO
Refer to Intermittent Incident .
- RESET DTCS
- Using CONSULT, select "ENGINE" and erase DTCs.
- Turn ignition switch OFF.
- Wait 90 seconds.
- Turn ignition switch ON.
- Using CONSULT, check for existing "ENGINE" diagnostic trouble codes.
Is P20FF-00 DTC current?
YES
Replace the DEF control module. Refer to Removal and Installation .
NO
GO TO 3 .
- PERFORM LEAK TEST
- Using CONSULT, select "ENGINE" and perform the "DEF System Leak Test" active test.
- Turn ignition switch OFF.
- Wait 90 seconds.
- Turn ignition switch ON.
- Using CONSULT, check for existing "ENGINE" diagnostic trouble codes.
Is P20FF-00 DTC current?
YES
Replace the DEF control module. Refer to Removal and Installation .
NO
GO TO 4 .
- ERASE DTCS
- Using CONSULT, select "ENGINE" and erase DTCs.
- Operate the engine within the "Conditions for Clearing the DTC".
Is P20FF-00 DTC current?
YES
Diagnosis procedure needs to be repeated. Refer to DTC Description .
NO
Repair complete.