Switches & Sensors
Troubleshooting oil level sensors
An oil level sensor continuously monitors the oil level and oil quality in your engine. It will alert you if your engine is running out of oil. If that happens, your engine could be significantly damaged and could mean expensive repairs.
If the oil warning light keeps coming on, or the oil gauge reads empty, (even after topping up), there is a good chance that the oil level sensor is faulty.
If possible, the oil level should be checked manually with a dipstick. If that reading is full then it is definitely a faulty oil level sensor and replacement is needed.
Replacement of this sensor is usually straight forward (depending on location). It is located on the sump and is fixed in place with three or four bolts and an electrical connector. Oil should be drained before changing this sensor.
Below are a few examples of the type of warning light that would display in the event of a faulty oil level sensor: