DTC P0634-85: Control Module Internal Temperature "A" Too High - Signal above allowable range: 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.
- Vehicle Conditions to enable DTC Logging strategy
- Ignition On
- Prioritised Checks to Perform
- Check powertrain control module for related DTCs and refer to relevant DTC index
- Refer to the appropriate system wiring diagram and check connections are secure and wiring integrity
- Check and install a new powertrain control module, only when diagnosed as failed
- Using the Jaguar Land Rover approved diagnostic equipment, carry out 'New Module - Powertrain control module - Diesel' routine
- Using the Jaguar Land Rover approved diagnostic equipment, carry out 'Fuel lift pump' routine (0x4027_00)
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest