Possible Causes
WARNING: This page does not describe the selected car, but rather 19 other vehicles, including the 2003 Jaguar XKR, 2003 Jaguar XK8, 2003 Jaguar XJR, 2003 Jaguar XJ8, and 2002 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.
- Low coolant level.
- Contaminated coolant.
- Engine thermostat failure.
- ECT sensor to ECM sensing circuit high resistance when hot.
- ECT sensor to ECM sensing circuit intermittent high resistance.