DTC C1A99-28: Pressure Sensor - Signal bias level out of range/zero adjustment failure: Action

WARNING: This page is about a different car, the 2018 Jaguar XF, 2017 Jaguar XF, and 2016 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.

Using the Jaguar Land Rover Approved Diagnostic Equipment, clear the DTC and retest. If the fault persists, check and install a new anti-lock brake system control module as required