P2C21
Engine Oil Temperature Sensor A/B Correlation
P2C21 is an OBD-II diagnostic trouble code meaning: Engine Oil Temperature Sensor A/B Correlation. Common causes: oil temperature sensor a or b faulty, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Check Engine Light Is On
- Reduced engine power
- Unstable engine operation
- Incorrect oil temperature readings on the dashboard
Causes
- Oil temperature sensor A or B faulty
- Open or short circuit in the sensor circuit
- Poor contact in sensor connectors
- Malfunction of the engine control unit (ECU)
- Contaminated or low engine oil level
How to Fix
- Check the level and condition of the engine oil
- Conduct diagnostics of oil temperature sensors
- Check the integrity of wiring and connectors
- Replace faulty oil temperature sensor
- If necessary, reflash or replace the ECU
Related codes
Error P2C21 by Vehicle Brand
FAQ
What does the P2C21 code mean?
P2C21 is an OBD-II diagnostic trouble code that indicates: Engine Oil Temperature Sensor A/B Correlation
What causes a P2C21 error code?
The most common causes of P2C21 include: Oil temperature sensor A or B faulty; Open or short circuit in the sensor circuit; Poor contact in sensor connectors; Malfunction of the engine control unit (ECU).
How do I fix a P2C21 diagnostic trouble code?
To fix P2C21: Check the level and condition of the engine oil. Conduct diagnostics of oil temperature sensors. Check the integrity of wiring and connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2C21?
Limited driving only, diagnose soon
How much does it cost to fix P2C21?
The estimated repair cost for P2C21 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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