DTC Description: Notes
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.
NOTE:
If DTC P0687-00 is displayed with this DTC, first perform the trouble diagnosis for other DTC.
- P0687-00 present. Refer to DTC Description .
The aftertreatment DEF quality sensor is a smart device that communicates to the ECM via CAN lines. The aftertreatment DEF quality sensor performs its own internal diagnostics and reports malfunctions back to the primary engine control module via the CAN lines. The aftertreatment DEF quality sensor is used to measure the concentration of the aftertreatment DEF in the tank.