DTC U0404-82: Invalid Data Received from Gear Shift Control Module A - Alive/sequence counter incorrect/not updated: Action

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

Using the manufacturer approved diagnostic system, check the transmission control switch for related DTCs and refer to the relevant DTC index