DTC P21C5-64: Reductant Level Sensor "A" Stuck - Signal plausibility failure: Action
WARNING: This page is about a different car, the 2018 Land Rover Range Rover, 2017 Land Rover Range Rover, and 2016 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Diesel exhaust fluid level sensor is initialized 12 seconds after Ignition ON
- Vehicle Conditions to enable DTC Logging Strategy
- DEF system pressurized
- Prioritized Checks to Perform
- Refer to the appropriate system wiring diagrams and check the diesel exhaust fluid tank module circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Contact dealer technical support
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest