DTC P2176-54: Throttle Actuator "A" Control System - Idle Position Not Learned - Missing calibration: Action

WARNING: This page is about a different car, the 2015 Land Rover LR2, 2014 Land Rover LR2, and 2013 Land Rover LR2. However, it is still accessible from the selected car via links, so may be relevant.

Using the manufacturer approved diagnostic system check engine control module for related DTCs and refer to the relevant DTC index
Turn the ignition off, allow the engine control module to power latch. Turn on the ignition wait 60 seconds, then start the engine. This process will allow throttle adaption data to be stored