DTC P0850-02: Park/neutral Switch Input Circuit - General signal failure: 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, clear the DTCs and road test the vehicle. Test the parklock mechanism by engaging and disengaging the parking lock several times. If the fault persists, renew parklock components as necessary. If the fault persists, install a new transmission control module