Skip the auto shop - Our mechanics make house calls

Q: Exhaust

asked by on

If I replace both of my catalytic converters with universals will it cause problems with the 02 sensors? An exhaust shop told me that I cannot use univerals because my check engine light will come on and mess with the trucks computer.

My car has 98000 miles.
My car has an automatic transmission.

There is always a chance if it will work as a replacement for the factory part anytime you use an aftermarket part. The exhaust catalyst on any vehicle is designed to flow a certain amount of exhaust at the same time cleaning out the bad gases. There is an O2 sensor before and after the catalyst that will measure the catalyst efficiency. If you use a new catalyst from the factory will work like the vehicle was new and should not cause codes. The aftermarket catalyst may work fine and not cause codes but then again it may not match the factory one and causes codes for catalyst efficiency. You will save a lot of money putting in aftermarket parts but take a chance it will not work.

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: Fixing catalytic converter low threshold issue

I fix that every week on people's cars because they have got to get their cars inspected and they get that stupid code "catalytic converter below efficiency threshold." There are so many things that can do it, but I've...

Q: Is this a help for ford care issue

Hello, thank you for writing in. With the light illuminating and then turning off right away, there are no major causes for concern at this exact moment. You may want to Several systems are tied into the Advanced Trac, and...

Q: My truck is drawing to put power somewhere. Alternator was changed due to high voltage. Now the truck still won't start

Without being there to complete a car is hard to start inspection, it's very difficult to diagnose what is causing this problem. However, it's very common for this type of problem to occur after installing aftermarket remote starting systems. Newer...

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...
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...