Skip the auto shop - Our mechanics make house calls

Q: Catalytic converters

asked by on

Had a diagnostic reading done twice both said catalytic converters were the problem. Could replacing the oxygen sensor fix the problem, or could I fix it any other way besides replacing both converters

My car has 206000 miles.
My car has an automatic transmission.

Hi There, As you know, the oxygen sensor reads the gases coming from the catalytic converters and as a result, occasionally the oxygen sensors can produce false readings that may otherwise indicate that the catalytic converters are not working properly. I would recommend replacing the oxygen sensors first as they are much less expensive to replace than the catalytic converters. If the same problem exists after replacing these, then it may be time to replace the catalytic converters as well. I would recommend having a professional from YourMechanic come to your location to inspect and diagnose your vehicle.

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: Clutch pedal won't decompress, 1995 Nissan

You will need to check the pedal free travel to see if it is more than a quarter of an inch. If it is, adjust the pedal linkage. After it is adjusted, bleed the clutch of air. Sometimes a pressure...

Q: Sonar front control does not beep

Hello. It sounds like the sonar system is malfunctioning and you have some sonar system sensors that are not working properly. The sonar system should be diagnosed so that the proper sensor can be replaced. Once the sonar system has...

Q: I need to know if its my ball joints or cv joint

Hi there: It's nearly impossible for us to accurately diagnose this without physically inspecting the components onsite, but honestly, it could be both. In most cases, when ball joints are damaged, the grinding will occur while turning or hitting 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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.