2017 07 05 VAR 47 - Oil Temperature Sensor

Oil Temperature Sensor

What is the Oil Temperature Sensor all about?

Engine oil is needed to lubricate the inner workings of your engine and prevent damage from friction. It works alongside the coolant that circulates in and around the engine to cool it. However, engine oil temperature must be strictly controlled. If the temperature crosses a threshold, engine damage can result.

The oil temperature sensor’s job is to monitor oil temp and communicate the information with the car’s computer. In some models, the oil temp is actually displayed in the dash, but many newer models only display engine coolant temperature. The oil temperature sensor works in tandem with the water temperature sensor and other temperature monitors to ensure that the temperature remains within an acceptable range.

Like all other sensors, the OTS is subject to high heat on a regular basis, which can damage the wiring harness. If the oil temperature sensor fails, the oil temperature will read incorrectly or not at all.

Keep in mind:

  • Not all vehicles have an oil temperature display.
  • The oil temperature sensor is not inspected during any maintenance, and will only be checked if a malfunction is suspected.
  • Damage can occur due to many reasons, including corrosion, wiring damage, sensor failure and more.

What common symptoms indicate you may need to replace the Oil Temperature Sensor?

  • Oil temperature gauge does not work
  • Oil temperature gauge works erratically or reads incorrectly

How important is this service?

Without access to accurate information about the oil temperature in your engine, the situation can become critical. If you believe there is a problem with the oil temperature sensor in your car, have the problem diagnosed by our experienced mechanics immediately.