DTC P0666-64: Control Module Internal Temperature Sensor "A" Circuit - Signal plausibility failure: Action

WARNING: This page is about a different car, the 2016 Land Rover LR4, 2015 Land Rover LR4, and 2014 Land Rover LR4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Consider environmental conditions before condemning the transmission control module

Allow the transmission control module to cool. Using the manufacturer approved diagnostic system, clear the DTCs and retest. If the fault persists, install a new transmission control module