Index des codes défaut · low
P1288
Cylinder-head temperature sensor out of self-test range
Cylinder-head temperature sensor out of self-test range
Scope: 2.0D · System(s): EMS/diesel
Common causes
- Cylinder-head temperature sensor/circuit
- wiring/connector
- cooling/temperature abnormality
Quick checks
- Confirm freeze-frame and conditions when the code set
- Inspect connectors, grounds, and harness for the circuit named in the code
- Compare live sensor values vs expected (unplugged/biased sensors are common)
Typical fixes
- Check sensor wiring and live temperature data
- verify coolant/thermostat operation
- replace sensor if readings are implausible.