Skip the auto shop - Our mechanics make house calls

Q: Catalytic converter replacement

asked by on

I brought my car to a mechanic for a tune up. Everything was running good and no check engine light. Now all of a sudden I have to replace my catalytic converter and my check engine light is on. Did the mechanic mess up my car or is it a problem that I caused

My car has 170000 miles.
My car has an automatic transmission.

A: Hello. It’s quite possible that there is no...

Hello. It’s quite possible that there is no one at fault here. It may just be unfortunate timing. I’m assuming that you have had the codes read and that is why you have decided you need to replace the catalytic converter. If there were no codes present other that catalyst efficiency, then it might just be normal wear and tear.

If there were any misfire codes or other problems before the tune up, driving it in that condition may have lead to a catalyst failure, but 170,000 miles is not really a premature failure. Many cars need to have at least one catalyst replacement before they reach 200,000 miles. YourMechanic can send a technician to your home who can replace your catalyst and advise you further as to what other conditions may exist.

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: Bmw alternator question

Hello, thank you for writing in. You will want to go with what they call an "OEM" (original equipment manufacture) part. This just means that the company which is producing the part uses the manufacture's design, and it should be...

Q: How do you fix p0365 on a 04 bmw 545i?i just put a new sensor from the dealer and my car is still acting up.?

P0365 refers to an open circuit on the camshaft position sensor on bank 1. It means the circuit for the sensor is incomplete. that could be a bad sensor, or it could be a bad connector,wire, ground or ECU.Since you've...

Q: Front exhaust pipe/check engine light

The flex pipe is a common repair on your car. Most shops just weld in a new one, or that section of pipe can be replaced as a whole. Almost every time I would see and hear the pipe leaking...

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...