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 AFTER TREATMENT DEF LEVEL
- Turn ignition OFF.
- Check the DEF fluid tank level.NOTE: Having low level DEF fluid in the tank can cause this DTC to set.
Is DEF fluid tank level less than 50%?
YES
Fill tank completely with fresh DEF.
NO
GO TO 2 .
- CHECK AFTER TREATMENT DEF CONCENTRATION
Using a refractometer [SST: J-54466] measure the concentration of the DEF in the tank.
Is DEF concentration within 32.5 A± 1.5 %?
YES
GO TO 3 .
NO
Drain the DEF fluid tank and fill with new DEF.
- CHECK FOR CURRENT DTC
- Using CONSULT, erase "ENGINE" diagnostic trouble codes.
- Operate the engine within the "Conditions for Clearing DTC".
- Using CONSULT, check for current "ENGINE" diagnostic trouble codes.
Is P207F-00 DTC current?
YES
Replace the After treatment DEF quality sensor. Refer to Exploded View
NO
Repair complete.