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

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 have a new catalyic converter that I purchased

You are welcome to buy your own parts and book a certified mechanic from YourMechanic to install those parts or perform associated repairs. If you desire that your catalytic converter be replaced by a certified Mechanic, dispatched by YourMechanic right...

Q: How do you program the universal garage door opener to operate a Rolling Code door?

Your car’s universal garage door opener (if equipped) is able to operate two types of garage doors – Fixed Code systems and Rolling Code systems. Here’s what you need to know about programming it for a Rolling Code door: ...

Q: No power to half my fuses. Car was crunk

If you request an electrical system diagnostic, a certified Mechanic will use the Factory Service Manual wiring diagrams and trace the circuit(s) supplying the "dead" segment of the fuse box back to the source. Obviously, there is a break in...

Related articles

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...
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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...