Skip the auto shop - Our mechanics make house calls

Q: Engine oil light flickers when I make a stop

asked by on

I'm having trouble with the engine oil light flashing on and off when I stop at a red light and then it stops flashing when I start driving again. I checked the oil and fluids and all seem okay. What is causing this?

The light is flickering on and off due to the oil pressure being low below 4 psi at idle or the oil pressure sensor is not working correctly. The only way to know for sure is to do an oil pressure test. The engine should have at least 4 psi at idle and above 25 psi at 3000 RPMs. If the oil pressure is below 4 psi at idle, then replace the oil sending unit. If the pressure is at zero at idle, then you will need the oil pump and screen replaced or at the very least checked. Also, check the engine for any bearing damage when the oil pump is replaced. A certified technician will be able to perform these tests and diagnose why this warning light appears for you.

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!
  1. Home
  2. Questions
  3. Engine oil light flickers when I make a stop

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Service B notice won't go off

Hi there, thanks for writing in about your 2001 Mercedes-Benz CLK320. The Service B indicator needs to be reset using a factory level scan tool. A qualified technician can reset the light, but only after performing a complete B service,...

Q: Crank but no start

If you are having issues with no spark, this could be due to the ignition coil on the engine. I believe that this engine has only one ignition coil for the whole engine. If this is the case, a faulty...

Q: Car battery light constantly goes on and off.

Hello. The fact that the car struggles when you take the jumper cables off suggests that the battery is not able to maintain a charge on its own. I would recommend checking the alternator and the voltage regulator as these...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.