Engine Oil Temperature Sensor B Circuit Intermittent/Erratic

Common symptoms

What you'll notice

• Check the wiring and connections of the engine oil temperature sensor
• Inspect and replace the engine oil temperature sensor if necessary
• Verify the engine coolant level and ensure it is at the correct level
• Perform a thorough inspection of the engine cooling system for any potential issues
• Reset the OBD 2 error code and monitor the system for any recurring issues

Common causes

Most likely first

1. Faulty engine oil temperature sensor
2. Loose or corroded connection to the engine oil temperature sensor
3. Malfunctioning temperature gauge or instrument cluster
4. Low engine oil level or dirty engine oil
5. Wiring issue or electrical fault related to the engine oil temperature sensor

How to diagnose & fix

Work through it in order

1. Engine overheating or temperature fluctuations
2. Inaccurate or fluctuating reading on the temperature gauge
3. Poor fuel efficiency
4. Engine misfires or stalling
5. Difficulty starting the vehicle