DTC P050A-22: Cold Start Idle Air Control System Performance - Signal amplitude > maximum: Action

WARNING: This page is about a different car, the 2018 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

Check air filter is not blocked
Check the intake air system is free from restrictions
Check front end accessory drive belt and driven components for overload failure or seized
Check power steering pump for overload, failed or seized component