DTC B1142-62: Ignition Status 1 - Signal compare 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.

Refer to the electrical circuit diagrams and check the ignition sense circuit for short circuit to ground, short circuit to power, open circuit, high resistance