DTC P21C8-11: Reductant Control Module Power Relay/Relays Control Circuit Low - Circuit short to ground: Action
- Vehicle Conditions to enable DTC Logging Strategy
- Prioritized Checks to Perform
- Refer to the appropriate SYSTEM WIRING DIAGRAMS information 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 information 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
- Using the Jaguar Land Rover Approved Diagnostic Equipment, clear the DTCs and retest