Autodata Technical Issue 13 – Poor engine performance from 2010 Jaguar XF
Each month the Autodata team answers a common technical question and provides a printable document with technical diagrams to download and keep, exclusively for IGA members. This month a Jaguar XF is having poor engine performance with no clear source, and several returning trouble codes.
Q. We are having a problem fixing a 2010 Jaguar XF 3,0 Diesel. The customer is reporting poor engine performance and the engine warning lamp illuminating. Trouble codes P006A, P00BD, P0235, P1247 and P2263 are recorded and all are referring to a variety of intake components and sensors including the turbocharger, mass air flow sensor and manifold absolute pressure sensor. We can erase the codes but they return soon after we return the car to the customer. We have carried out many tests but can’t pinpoint the source of the problem. Can you help?
A. This problem is caused by a sticking secondary turbocharger shut-off valve due to corrosion of the vacuum actuator rod and link arm. Affected vehicles are fitted with a vacuum actuator rod retaining nut (Fig1.1), vehicles not fitted with an actuator rod retaining nut are unaffected.
A repair kit is available from Jaguar parts department consisting of a new vacuum actuator and link arm. Mark the position of the old link arm before removal to ensure the new link arm is fitted in the correct position. DO NOT change the adjustment of the vacuum actuator rod lock nut (Fig1.2). The new link arm does not use a vacuum actuator rod retaining nut. Erase any trouble codes and road test to confirm the repair.
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