Q: In limp mode following a catalytic convertor repair. Have driven 70 mIles in limp mode.

asked by on

The mechanic told me that my car will experience limp mode after changing the convertor so I drove it to work and back home which is 70 miles round trip. How long should it take to retrain the transmission and go back to driving normally?

My car has 260000 miles.
My car has an automatic transmission.

The only purpose of the catalytic converter is to reduce exhaust emissions. The converter is within the exhaust system and functions as part of the vehicle’s emission control system. Excepting only an unusual circumstance where the converter is physically plugged up, the converter has no effect on your transmission or engine. Limp mode is usually accompanied by illumination of the check engine light (CEL). If the CEL is on, there will be trouble codes that can help identify the cause of the problem you are having. Consequently, I recommend you request a check engine light diagnostic. During such a diagnostic, a certified mechanic from YourMechanic would use a code scanner to retrieve diagnostic trouble code(s) from your car’s PCM. Using those codes the appropriate individual vehicle components or sub-systems (often a sensor, circuit, and the like) are tested to pinpoint the cause of the fault or the reason why the check engine light has illuminated. Once the faulty part or component is identified, it is explained to your satisfaction and the mechanic will let you know of the cost to repair. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. In limp mode following a catalytic convertor repair. Have driven 70 mIles in limp mode.

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: Car stuck in third gear

It does sound like a transmission problem. I would have to recommend taking your car to a European transmission specialist, such as one from YourMechanic. They may be able to clean out the valve body, replace the filter and fluid,...

Q: can't connect OBD port

Hello. Usually when the OBD scanner does not connect to a car’s computer it means that the fuse for the OBD connector is blown. This fuse can stand alone as its own fuse or it can have other power supplies...

Q: Recommendation on how thick oil to use on a 2004 Corolla

It depends on what shape your engine is in. If you've been using 10-30W and it runs fine and doesn't burn any oil, then just keep using 10-30W. That's perfectly fine. But on the other hand, if it burns oil,...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...