DTC P21C7-13: Reductant Control Module Power Relay/Relays Control Circuit/Open - Circuit open: 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: A fault clear is NOT sufficient to clear the vehicle 'inducement' system warnings. The 'inducement' warnings automatically clear ONLY upon confirmation of the repair by the vehicle OBD system. The monitoring MUST be executed. The electrical checks normally occur once ignition is on or after engine start

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
- Refer to the appropriate system wiring diagrams and check the diesel exhaust fluid relay 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
- Check and install a new diesel exhaust fluid relay as required
- Contact dealer technical support
Vehicle Conditions to enable DTC Logging Strategy
- Engine running
- On completion of the previous repair actions the following MUST be carried out
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest
- NOTE: The engine MIL is OFF (when engine ON)
- Start engine
- The 'inducement' warning clears automatically once the monitoring has executed and passed with no malfunction. This terminates the drive cycle
- NOTE: If the engine MIL shows during the driving cycle, then the malfunction has re-occurred. Further repair is required
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs
- NOTE: This clears the fault storage from P2BAE/P2BAF