P0666-64: Control Module Internal Temperature Sensor "A" Circuit - Signal plausibility failure: Action
WARNING: This page is about a different car, the 2020 Land Rover Range Rover Velar. However, it is still accessible from the selected car via links, so may be relevant.
- Refer to the electrical circuit diagrams and check the power and ground connections to the module
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest
- Check and install a new powertrain control module as required. Using the Jaguar Land Rover approved diagnostic equipment, configure the powertrain control module as a new module