DTC P1290: Cylinder Head Temperature (CHT) Sensor Circuit Low
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2006 Mercury Mountaineer, 2006 Mercury Monterey, 2006 Mercury Montego, 2006 Mercury Mariner, and 2006 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
P1290 - CYLINDER HEAD TEMPERATURE (CHT) SENSOR CIRCUIT LOW
| Description: | Indicates a CHT sensor circuit short to ground. | ||
| Possible Causes: |
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| Diagnostic Aids: | A CHT V PID value reading of less than 0.2 volt with key ON engine OFF, or during any engine operating mode, indicates a concern is present. DTC P0117 may also be reported when this DTC is set. Either of these DTCs activate the MIL. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DL . | ||