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.

A: It sounds like you have a pretty bad misfir...

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・Save up to 30%

Get a quote

What others are asking

Q: Motor mount/waterpump bolt froze

When dealing with a broken off bolt there are a few different ways to fix this. One of which involves drilling out the broken off bolt and extracting it using a reverse drill bit. Another way is to drill out...

Q: Check Engine Light is on - 2009 Chevrolet Malibu

If you have codes to a sensor, it does not always mean the sensor is bad. There may be wiring or connector problems causing erratic or incorrect sensor input to the computer. The code stored in a computer is only...

Q: I just got my transmission replaced, and then my check engine light comes. Could that have something to do with the light?

Hey there, thanks for writing in about your 2003 Honda Accord. If you had your transmission just replaced, then your light may be on for the transmission. The light could still be on for another reason. I would have the...

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...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...