DTC P05F8-4B: Reductant Heater Control Module Performance - Over temperature: Action
- Vehicle Conditions to enable DTC Logging Strategy
- Prioritized Checks to Perform
- Refer to the appropriate System Wiring Diagram(s) and check the diesel exhaust fluid heater control unit circuit for short circuit to power
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Check and install a new diesel exhaust fluid heater control unit module as required
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest