Skip the auto shop - Our mechanics make house calls

Q: My engine light is on and auto zone code says O2 sensor or catalytic converter.

asked by on

My engine light is on and auto zone code says oxygen sensor or catalytic convertor. When I drive it the car feel like its jumping or slipping transmission. Accelerates funny. Could the sensor or converter make it feel that way?

My car has 125000 miles.
My car has an automatic transmission.

A: If you have codes to the O2 sensors does no...

If you have codes to the O2 sensors does not always mean you have bad catalytic converters. You describe different problems that can be the converters and even a transmission shift problems. I would recommend having a mechanic like one from YourMechanic diagnose the problems you are having since both repairs could be very expensive if the problem turns out to be the catalyst and the transmission. You may have a minor problem that is causing all the problems like a vacuum leak at one of the vacuum hoses to the crankcase ventilation system. Only a thorough diagnostics from a qualified mechanic can isolate the problems.

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: Engine light is on, Catalytic converter is bad. 2008 Jeep Wrangler

Hi - on your Jeep the catalytic converter(s) - all 4 of them - are welded together as a single assembly, going from the engine manifolds, to the center muffler section. You don't indicate your mileage, so it's hard to...

Q: Electronic stability control engages in minivan 1 of 100 times

There are 2 Mercury Technical Service Bulletins relating to this complaint (but no Recalls). The TSB numbers are 06218 and 071011. Contact your local Mercury dealer for further information on the fix and approximate cost (if any).

Q: Automatic transmission programming problem

While I agree that this is all probably built into the programming of the transmission computer, after looking at the Mazda service information, I see no TSB's that states Mazda has any updates available in transmission programming to address any...

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...