P0196low severityPowertrain
Engine Oil Temperature Sensor Circuit
on 1999 Mazda Protege 2.0L I4 · FWD
What this code means
Malfunction in the engine oil temperature sensor circuit.
Symptoms
- Check Engine Light
- Incorrect oil temp reading
Common causes
- Faulty oil temp sensor
- Wiring issue
- Connector corrosion
Diagnostic steps
- Test sensor resistance
- Inspect wiring
- Check connector
Repair notes
Replace oil temperature sensor.
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