Skip the auto shop - Our mechanics make house calls

Q: Check Engine Light on, catalytic converter and O2 sensors need changing - $3000

asked by on

Really? is it possible that only O2 sensor need change? Can I use after market parts and save a bunch of money ? I only drive about 8000 miles a year and will not put any more than 15-20k miles on it before I get new car? How long can I drive it like this?

My car has 121000 miles.
My car has an automatic transmission.

Hi there:

If you’re Check Engine Light is coming on and somebody diagnosed this as a problem with your O2 sensors or the catalytic converter emissions system, it’s highly possible that the trouble part are the front or back bank O2 sensors. Most O2 sensors are OEM however there are aftermarket equivalents available in some cases. The best way to know for certain as to what you need to replace is to have a professional mobile mechanic, like one from YourMechanic, complete a Check Engine Light inspection, so they can pinpoint the source of the issue. If the catalytic converter is found to have been faulty, replacing the sensors won’t help.

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
  • Home
  • Questions
  • Check Engine Light on, catalytic converter and O2 sensors need changing - $3000

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: I jumped my 2008 Cadillac CTS and now there is not power.

Hello. The first thing I would do is check the fuses. If there is one blown fuse then there may be many more. The only time a fuse will blow is if the jumper cables are installed backwards. If the...

Q: No heat on drivers side air vents

Hi there. This is typically an indication that the vent switch is damaged, which sends hot air to the driver side, but the passenger side remains cold. It's also possible; if you have climate controls on your Cadillac that this...

Q: Rear side automatic window not working

From the information provided on your Chevy Avalanche, I can assume from my experience that it is likely that the window regulator has failed. A failing window regulator would result in the window falling inside the door. In most cases...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...