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: Windshield wipers working intermittently, & sometimes won't shutoff

If there is a switch malfunction, it's possible that such could explain both faults. If the problem is not in the switch, then there could be a bad relay in the circuit (if so equipped), loose fuse, bad ground, and/or...

Q: 9 codes at onece

Hello there. Typically when an engine runs rough when it's cold, it tends to be due to a problem with the fuel to air ratio not being corrected and fine-tuned by sensors. The OBD-II trouble codes you've posted seem to...

Q: When i start my car, the rpm meter goes up to the number 5 and doesn't go back down, what could the problem be?

Hi Ariana. Thanks for contacting us today. Assuming that your engine is not winding up that high and it's just the gauge that is doing this, it's probably due to a damaged electrical relay or fuse that powers the tachometer...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.