Seven problems related to check engine light on have been reported for the 2008 Chevrolet Cobalt. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Chevrolet Cobalt based on all problems reported for the 2008 Cobalt.
Instrument cluster malfunctioning, speedometer and warning indicators flashing, going out, resuming normal operation, then repeating the failure symptoms repeatedly. During failure symptoms the transmission and engine bog down, stall and the power steering assist fails (with engine still running) . Random electrical issues such as the check engine light, car alarm sensor, etc flash on and off then start working again totally normally. Can not get the failure to occur at the dealership or mechanics. Fails several times a week. Fails when driving on street, highway at low speeds, medium speeds or high speeds.
Coolant is not reading, air conditioner don't work and check engine light comes on. It will stay like this for a day or so then by the time I get it into the shop it starts to read again and the check engine light goes out air conditioner will work again and there are no codes to read. Repair shop can't find anything wrong. They said possible thermostat issue or sensor issue but without codes or check engine light on they have no idea. It keeps doing it but it seems to correct it self before I can get it back to the garage usually over a weekend when they are closed or very busy. I have had this issue for a couple months now, it has not appeared to cause any over heating or made any other sounds that I am aware of.
The contact owns a 2008 Chevrolet Cobalt. The contact stated that the check engine light illuminated constantly. The vehicle was taken to an independent mechanic where the failure could not be determined. The contact also mentioned that the oxygen sensor may have been defective. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was unknown.
While driving on the route 20 at about 50mph it started to rain and all of a sudden my car "reduced engine power" light went on. My car started slowing down and I had to turn to the closest street so that I wasn't hit by the car behind me. This has happened before, last year while on the highway driving to cleveland, my car began rapidly slowing down and I couldn't pick up speed while pressing the gas. I took the nearest exit and had to wait two hours before the engine light would turn off. Also, while the check engine light is on, it also says "traction off" and my car shakes. Both times it was raining, and I was driving at 50mpr speeds.
Tl-the contact owns a 2008 Chevrolet Cobalt. The contact stated while driving at an unknown speed, the check engine light illuminated and the thermostat became inoperable . The failure recurred multiple times. The vehicle has not been repaired. The approximate failure mileage was 40,000. Pam.
My aircondition quits blowing cool air off and on the buttons are wrong. Engine light comes on and off. The airbag light comes on and off.
The contact owns a 2008 Chevrolet Cobalt. The contact stated that while driving at various speeds, there was an abnormal fuel odor in the vehicle. Additionally, while operating the vehicle, the check engine warning light remained illuminated. On several occasions the vehicle stalled. The cause of the failure was not determined. An unknown dealer and the manufacturer were notified of the failure. The failure mileage was 2,731.