Camshaft Position (CMP) Sensors

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

The Camshaft Position (CMP) sensors are magneto-resistive element sensors that allow the Powertrain Control Module (PCM) to determine the angular position of the camshafts. Magneto-resistive element sensors produce a digital output which allows the PCM to detect speeds down to zero.

Four CMP sensors are installed in the front upper timing covers, one for each camshaft.

Each CMP sensor is secured with a single screw and sealed with an O-ring. On each CMP sensor, a three pin electrical connector provides the interface with the engine harness.

The head of each CMP sensor faces a sensor wheel attached to the front of the related VCT unit.

If an exhaust CMP sensor fails, the PCM disables the VCT of both exhaust camshafts.

If an intake CMP sensor fails, the PCM disables the VCT of both intake camshafts. This can result in the engine being slow, or failing, to start.