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.
The Diesel Exhaust Fluid (DEF) tank level sensor measures the level of the fluid inside the DEF Tank. The DEF controller unit provides a 5V source and monitors the voltage that determines the fluid level in the tank. DEF Tank Level Sensor is integrated in the DEF dosing unit. It must be replaced with the DEF supply pump assembly.