I have a 2006 cobalt that the engine check light comes on.


Asked by Mar 03, 2013 at 04:17 AM about the 2006 Chevrolet Cobalt LT Coupe

Question type: Maintenance & Repair

Had two different mechanics say the catalytic converter needs replaced. I replaced both times and the light still stays on. I went to a Chevy delership the third time and they diagnosed it and wrote a work order of what needs to be changed. I replaced what they said needs replaced which were the spark plugs, Ign coil module and fuel filter. After about 100 miles the engine check light came back on. I am lost on the cause any help would be appreciated.

10 Answers


I actually have a '07 Cobalt, and have the same issue the engine light likes to stay on. I have had it checked many times, replaced a few items and nothing did the trick. Finally went to a private garage and asked them about it, they said that it has something to do with the way the car was built. I believe he said it was either the catalytic converter or the transmission which wasn't properly responding to the computer. I've gotten both checked out, both passed... it's still on now after 110,000 miles.

9 of 9 people found this helpful.

What trouble codes are you getting?

6 of 6 people found this helpful.

P0717 ISS circuit low input

2 of 2 people found this helpful.

From what I just read on another forum this trouble code has to do with the vehicle speed sensor in the transmission. Apparently it is sending information to the computer that the car is moving slower than it really is. I'm not real familiar with transmission problems but I hope this points you in the right direction. HTH. -Jim

4 of 4 people found this helpful.

@jesse how are u passing inspection cause everything i do the stupid light wont go off and my inspection is due at the end of the month

5 of 5 people found this helpful.

Jraupp, what trouble code(s) do you have? There are many things that can turn on your check engine light. Anything from a loose or missing gas cap to a major engine failure can turn on the check engine light. Have your computer scanned and post the trouble code(s) on a new question thread. We'll be happy to try and help. - Jim

2 of 2 people found this helpful.

p0171 bank one

2 of 2 people found this helpful.

P0171 is system running too lean. Usually this is caused by a vacuum leak, faulty mass air flow (MAF) sensor, or an exhaust leak that's ahead of the upstream oxygen sensor. HTH. -Jim

6 of 6 people found this helpful.
Best Answer Mark helpful

change the intake manifold gasket...problem solved gurenteed lol

4 of 4 people found this helpful.

I need help with trouble code P0304

Your Answer


Looking for a Used Cobalt in your area?

CarGurus has 3,686 nationwide Cobalt listings starting at $1,800.


Chevrolet Cobalt Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Honda Civic
833 Great Deals out of 78,398 listings starting at $900
Used Chevrolet Malibu
1,236 Great Deals out of 78,091 listings starting at $1,500
Used Ford Focus
759 Great Deals out of 53,618 listings starting at $1,299
Used Chevrolet Impala
591 Great Deals out of 34,660 listings starting at $1,000
Used Ford Mustang
760 Great Deals out of 42,755 listings starting at $1,300
Used Toyota Corolla
928 Great Deals out of 66,116 listings starting at $1,995
Used Honda Accord
1,023 Great Deals out of 62,741 listings starting at $999
Used Toyota Camry
1,081 Great Deals out of 72,629 listings starting at $990
Used Ford Fusion
1,115 Great Deals out of 76,679 listings starting at $1,299
Used Dodge Charger
470 Great Deals out of 27,625 listings starting at $1,650
Used Nissan Altima
1,154 Great Deals out of 74,938 listings starting at $999
Used Hyundai Elantra
541 Great Deals out of 41,962 listings starting at $795

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.