P0197
Engine Oil Temperature Sensor A Circuit Low
P0197 is an OBD-II diagnostic trouble code meaning: Engine Oil Temperature Sensor A Circuit Low. Common causes: malfunction of the engine oil temperature sensor, open or short circuit in wiring harness. Estimated repair cost: $33–111.
Symptoms
- Incorrect oil temperature readings on the dashboard
- Engine performance deterioration
- Check Engine Light Illuminates
- Increased fuel consumption
Causes
- Malfunction of the engine oil temperature sensor
- Open or short circuit in wiring harness
- Poor contact in the sensor connector
- ECU malfunction (rare)
How to Fix
- Check the condition of the oil temperature sensor and its connector
- Check the integrity of the wiring harness from the sensor to the ECU
- Measure the sensor resistance and compare with reference values
- If necessary, replace the sensor or repair the wiring harness
- Clear the error code and check if it returns
Related codes
Error P0197 by Vehicle Brand
FAQ
What does the P0197 code mean?
P0197 is an OBD-II diagnostic trouble code that indicates: Engine Oil Temperature Sensor A Circuit Low
What causes a P0197 error code?
The most common causes of P0197 include: Malfunction of the engine oil temperature sensor; Open or short circuit in wiring harness; Poor contact in the sensor connector; ECU malfunction (rare).
How do I fix a P0197 diagnostic trouble code?
To fix P0197: Check the condition of the oil temperature sensor and its connector. Check the integrity of the wiring harness from the sensor to the ECU. Measure the sensor resistance and compare with reference values. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0197?
Limited driving only, diagnose soon
How much does it cost to fix P0197?
The estimated repair cost for P0197 is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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