P0196Engine Oil Temperature Sensor "A" Range/Performance
What it means
The engine oil temperature sensor reading is plausible electrically, but doesn't match the other temperatures or doesn't change as expected while the engine warms up. The ECU uses oil temperature for engine protection, variable valve timing and service interval calculations.
Symptoms
- Check engine light
- Possibly reduced power or the wrong oil temperature shown
Common causes
- Sensor drifting
- Real oil overheating
- Poor connection
What to check first
- After a cold soak, oil and coolant temperatures should be close
- Measure the sensor resistance against the table
- Check the oil level and cooler
Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.