P0198: Engine Oil Temperature Sensor High
MediumPowertrainEngine Oil System
What does P0198 mean?
P0198 is a diagnostic trouble code indicating "Engine Oil Temperature Sensor High". A sensor in the engine oil system is reporting abnormal data or has lost communication with the ECU. Sensors can fail due to age, contamination, heat exposure, or wiring issues.
Common causes
- Faulty engine oil system component
- Wiring or connector issue in the related circuit
- Failed sensor providing incorrect readings
- Software/calibration issue requiring ECU update
- Related component causing secondary fault
What should you do?
Schedule a diagnostic appointment at your earliest convenience. The vehicle is generally safe to drive short distances, but the underlying issue should be addressed to prevent it from worsening.
Get a diagnosis for YOUR car
Code P0198 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.