P1289Cylinder head temperature sensor circuit high
- Ford code · Engine
- Turns on the check-engine light
- How the car detects it
- The cylinder head temperature (CHT) sensor signal is stuck high, which normally means the circuit is open or shorted to voltage. P0118 may be stored with it. Many Ford engines use this sensor as their only engine temperature reading, so the cooling fan and the temperature gauge may not work normally.
- What you may notice
- Check-engine light
- Temperature gauge or cooling fan behaving oddly
- Likely causes
- PossibleOpen circuit or poor connection at the sensor
- RareShort to voltage
- RareFailed sensor
- Sources
Backed by at least two independent sources.
From Obdaryn's Ford pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.