Skip the auto shop - Our mechanics make house calls

Q: Red oil light just came on - 2010 Ford Flex

asked by on

Driving to a rural area on vacation when oil light came on and stayed on. Oil was changed 1000 mile ago. Oil level is good. Check engine light has not come on. The one mechanic in town said replace sensor. I asked him to hook car to obd reader. He did and while engine was off, the computer said there were no errors at all. He didn't start the engine with the obd reader attached but I don't know if that is necessary. New sensor could aririve today but I don't know if I need to put vacation on hold and wait for it or if I can continue to drive car.

My car has 91000 miles.

A: A quick "diagnosis" can be obtain...

A quick "diagnosis" can be obtained by unscrewing the pressure sensor and installing an external oil pressure test gauge. YourMechanic will compare the oil pressure at idle to the factory spec., but normally at idle you should see approximately 10 PSI of pressure, rising to perhaps 40-65 PSI at highway speed.

If the pressure is "normal", obviously you can use the car for the time being as the activation of the warning light would obviously be due to a malfunction in the circuit (including the "sensor"). If the pressure does turn out to be too low, the reason has to be determined, and repairs made, because driving the car with low oil pressure will ruin the engine.

If you are lucky, it might be something simple like a defective oil filter but if not, the entire lubrication system will have to be diagnosed. To avoid any unnecessary repairs, have one of our mobile technicians come to your home to further diagnose the warning light and help you make the necessary repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Antifreeze leaking out of radiator

Your car most likely overheated because there was no coolant in the engine. The leak in your radiator will need to be fixed, and then your car should operate normally again. I would ask for help from one of the...

Q: Leak in window

Hi, thanks for writing in. The rear window may not have been sealed properly when the window was installed. The sealer may have not stuck to the glass completely, causing the leak. You will need to have the glass removed...

Q: Code P0496.

This may be obvious, but have you cleared the code with the scanner? If so, disregard that first sentence. Codes will not clear immediately after the repair. With an emissions system code, there is also a drive cycle to be...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.