Engine Oil Temperature Sensor B Circuit

Common symptoms

What you'll notice

• Check the engine oil level and ensure it is at the recommended level.
• Inspect the engine oil temperature sensor for any signs of damage or corrosion, and replace if necessary.
• Check the wiring and connections of the engine oil temperature sensor for any loose or damaged wires, and repair or replace as needed.

Common causes

Most likely first

1. Engine oil temperature sensor malfunction
2. Wiring or connection issues related to the engine oil temperature sensor
3. Low engine oil level
4. Engine coolant temperature sensor malfunction
5. Faulty engine control module (ECM) or powertrain control module (PCM)

How to diagnose & fix

Work through it in order

1. Check engine light illuminates on the dashboard
2. Engine overheating or running hotter than usual
3. Inaccurate or fluctuating engine oil temperature readings
4. Engine misfires or runs rough
5. Decreased fuel efficiency