Skip the auto shop - Our mechanics make house calls

Q: Check Engine Light came on

asked by on

The Check Engine Light came on and the car began to skip, and seemed idled up. I think it may be the 02 sensor.

It sounds like you have a pretty bad misfire. While a faulty O2 sensor could be the cause, it is not the most likely. A misfire happen can be caused by anything that prevents the air/fuel mixture from igniting properly inside the combustion chamber. This could be anything from worn spark plugs, to an engine mechanical problem. The first thing to do is to retrieve the stored Diagnostic Trouble Code (DTC). This will provide a starting point for the diagnostic procedure. I suggest you have a trained professional with dedicated test equipment find the cause of the Check Engine Light illumination, and recommend the best path to repair. The team at YourMechanic is an excellent option.

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: Right side curtain air bag

The deployment of the air bag may or may not be a "delayed" consequence of the year ago "damage". A possibility is the deployment is a consequence of a defect(s) in the circuit and the "safing" provisions as well. A...

Q: P0008 error code is shown

The P0008 code you are receiving is telling you the camshafts and the crankshaft are reading that they are out of sync. The computer will run tests on the alignment of the camshafts to each other, and with the crankshaft....

Q: Losing coolant via the water pump

The symptoms you describe for your Audi lead me to believe that not only is your water pump failing, but coolant is finding its way into the exhaust system. This can happen a few different ways such as a blown...

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...
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...