P0198
Engine Oil Temperature Sensor A Circuit High
P0198 is an OBD-II diagnostic trouble code meaning: Engine Oil Temperature Sensor A Circuit High. Common causes: oil temperature sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $33–89.
Symptoms
- Unstable engine operation
- Incorrect oil temperature readings on the dashboard
- Increased fuel consumption
- Check Engine Light Illuminates
Causes
- Oil temperature sensor malfunction
- Open or short circuit in wiring harness
- Poor contact in the sensor connector
- ECU malfunction
How to Fix
- Check the condition of the oil temperature sensor and its connector
- Check the integrity of the wiring harness
- Measure the sensor resistance and compare with the nominal values
- Replace sensor if necessary
- Clear error memory and check if error is returned
Related codes
Error P0198 by Vehicle Brand
FAQ
What does the P0198 code mean?
P0198 is an OBD-II diagnostic trouble code that indicates: Engine Oil Temperature Sensor A Circuit High
What causes a P0198 error code?
The most common causes of P0198 include: Oil temperature sensor malfunction; Open or short circuit in wiring harness; Poor contact in the sensor connector; ECU malfunction.
How do I fix a P0198 diagnostic trouble code?
To fix P0198: Check the condition of the oil temperature sensor and its connector. Check the integrity of the wiring harness. Measure the sensor resistance and compare with the nominal values. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0198?
Limited driving only, diagnose soon
How much does it cost to fix P0198?
The estimated repair cost for P0198 is $33–89. Actual cost depends on your vehicle, location, and labor rates.
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