OBD-II code · Powertrain (generic)
P017A Cylinder Head Temperature Sensor A Circuit
Generic electrical fault on cylinder head temperature sensor A (CHT sensor — used on engines without conventional ECT).
Is it safe to drive with P017A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor failed
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Cht Sensor, Sensor Wiring
Related codes
- P0177Fuel Composition Sensor Circuit Range / Performance
- P0178Fuel Composition Sensor Circuit Low Input
- P0179Fuel Composition Sensor Circuit High Input
- P017BCylinder Head Temperature Sensor A Range/Performance
- P017CCylinder Head Temperature Sensor A Circuit Low
- P017DCylinder Head Temperature Sensor A Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.