DTC P0404-85: EGR "A" Control Circuit Range/Performance - Signal above allowable range: Action
WARNING: This page is about a different car, the 2018 Jaguar XF and 2017 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.
- Check EGR valve for mechanical integrity
- Refer to the appropriate system wiring diagrams and check the EGR valve 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 EGR valve as required
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest
- Test the vehicle over 3 drive cycles (engine on/off) to confirm the repair