DTC P0634-98: Control Module Internal Temperature "A" Too High - Component or system over temperature: Action
WARNING: This page is about a different car, the 2018 Land Rover Discovery Sport, 2017 Land Rover Discovery Sport, 2016 Land Rover Discovery Sport, and 2015 Land Rover Discovery Sport. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
This DTC may log due to aggressive driving or holding the transmission in a fixed gear. Check for other related DTCs
- Refer to the relevant section of the service information and check the automatic transmission fluid level. Rectify as necessary
- Check the automatic transmission cooling system for obstruction/damage/blockage. Rectify as necessary