Q: 2005 Cobalt CEL after code repair

asked by on

Hi My car was misfiring and staling, decreased speed ect blinking CEL .. code was ignition coil. replaced repaired and changed plugs. GREAT !!! except 20 miles later CEL came on again solid... stopped at ato parts they read code... Now it said Cat. Converter !!! what the heck... WHY ???? guy said its running clean now and is getting plugged ?? HUH.... OK. Well can I drive it without repairing til I can afford that ? What would cause that now ?
Thanks !
My car has an automatic transmission.

Hello. A catalytic converter code can come up for many reasons, usually indicated by the specific trouble code. A catalytic converter code can point to a few different things. Depending on the code, a few common causes could be faulty oxygen sensors, issues with the engine management system, or a faulty catalytic converter.

You may continue to drive the vehicle, however, it will likely cause the issue to worsen over time. If the Check Engine Light starts flashing, I would then stop driving the vehicle, as the computer has detected an issue that could potentially cause damage to the vehicle’s emissions components.

As the possibilities will vary depending on the specific trouble code, I would recommend having a professional technician, such as one from YourMechanic, visit your location, to diagnose the Check Engine Light and determine if the catalytic converter needs to be replaced.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. 2005 Cobalt CEL after code repair

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: Having possible transmission problems on my car

You may have a problem with the torque converter not going into lock up properly. There are a couple of technical bulletins which say to replace the torque converter. There is also another bulletin that says to see if the...

Q: Hesitates with acceleration, check engine light blinks when gas is pressed. White smoke coming out exhaust but disappears

Hello...If the check engine light is flashing, that signifies a condition, such as active engine misfiring, that should be investigated and resolved promptly to avoid further damage to engine components, not to mention the catalytic converter. The recommended service is...

Q: Got code P1259 after Check Engine light

Hi, the problem could be a bad sensor. I would recommend replacing the oil pressure sensor. To do this, disconnect the battery and locate the pressure sensor,remove old pressure sensor and replace it with the new one. Finally, reconnect the...

Related articles

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...
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.
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.