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 i...

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・Save up to 30%

Get a quote

What others are asking

Q: Battery new Not charging. Suspect alt

You need to have the alternator checked and then the battery. Sometimes the alternator charges fine but the cable between the alternator and battery is bad. If so, it will not charge the battery. The cable from the alternator and...

Q: Code P0320 200 Mercury Cougar 2.0l

Hello. A no spark condition can be caused by many things. If the aforementioned components have already been replaced I would move on to looking at the ignition module, and perhaps the wiring to a few specific components. The ignition...

Q: high voltage to govern sensor is reading too high

Hello. The voltage to the governor sensor is provided and controlled by the computer. If there is an issue with the voltage then the issue is likely computer or wiring related. It may be possible that some wiring has been...

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