Skip the auto shop - Our mechanics make house calls

Q: Engine warning light on

asked by on

My engine warning light came on a couple minutes ago. The car is vibrating more than usual even when idle. No other noticeable problems.

Car is well maintained and hasn't been in any accidents

My car has 74000 miles.
My car has an automatic transmission.

Your check engine light may come on for many different reasons such as a faulty mass air flow sensor, a faulty O2 sensor, a bad catalytic converter, bad spark plugs or wires and many other reasons. Any of these types of things can cause the car to vibrate a bit due to a rough idle. Unfortunately due to the wide range of possibilities for the check engine light to come on, the best way to narrow down the scope of what may be causing this is to have the vehicle hooked up to a scanning tool to download any potential fault codes that may have registered in the computer. I would recommend having an expert from YourMechanic come to your location to take a look at your vehicle to determine what may be causing your check engine light to come on.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: It says service engine soon usually in the morning while warming up and goes out but does not come back on.

The check engine light should come on when you turn the key to the "on" position, but without starting or running the car. That function allows you to do a bulb check but also indicates that the PCM (computer) is...

Q: Satellite radio not working

The radio is most likely the cause, since the preview channel should stay on if it was working like it should. The radio is capable of storing codes if it runs into any errors. It will need to be scanned...

Q: Car stuck in 3rd gear

Hi there. When a professional mechanic is hired to diagnose a problem, the trouble code(s) are only one part of the complete inspection. In many cases, the codes, like the P0760 code you've listed, indicate a possible source of a...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...