Engine fault code 39. not listed in owners manual.

Question:

1993 Jaguar XJ-S 4.0 ltr 6 cyl fault code 39. not listed in owners manual. What is it and what could it mean?

Answer;

A fault code 39 indicates that there is a problem with the EGR temperature sensor circuit. The ECM monitors the temperature at the intake manifold EGR adapter to determine if exhaust gas is flowing when the EGR valve is commanded open. Check for a malfunctioning EGR valve, carbon deposits clogging the EGR passages, a faulty EGR temperature sensor, or an electrical problem affecting the EGR temperature sensor circuit. The EGR temperature sensor is screwed into the EGR adapter on the right side of the engine. It is part #LHE1610AA and sells for 129.75 at any jaguar dealer parts department.