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 ECM relay provides battery voltage to the smart power sensors and actuators. The Engine Control Module (ECM) controls the grounds the coil of the relay at key ON. This will switch on power to the Aftertreatment Temperature sensor modules, aftertreatment DEF controller, aftertreatment DEF quality sensor, inlet and outlet NOx sensors, rotary turbine control valve actuator, fuel pump actuator, fuel pressure relief valve and glow plug module. A DTC is set when the ground wire is shorted to battery.