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

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2015 Jaguar XKR-S, 2015 Jaguar XKR, 2015 Jaguar XK, 2014 Jaguar XKR-S, and 2014 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.

Check the pedal box is adjusted/operating correctly, perform any necessary adjustments, clear DTC and retest system. If DTC resets, suspect Anti-Lock Braking System Control Module. Refer to the Warranty Policy and Procedures manual if a module/component is suspect