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Chevrolet Cobalt check engine light comes on

313 of the 7,681 owner complaints about the Chevrolet Cobalt describe check engine light, most of them for the 2005 model year.

owner complaints
313
worst model year
2005
typical repair cost reported
$1,000
typical mileage
81,744
Is there a fix? No recall or service bulletin covers this area of the car yet.

By model year

Often reported together

Stalling 55Power steering loss 46Loss of power 30Jerking 27Fuel leak 19Fuel smell 18Steering lock-up 15Fuel pump 15

Trouble codes mentioned

P0641 3U2107 1U2105 1U2100 1U0140 1U0121 1U0101 1U0100 1P2138 1P1682 1

What owners say

Filed Feb 12, 2026 · Electrical, Engine · 90,000 miles · OH

The contact owns a 2005 Chevrolet Cobalt. The contact stated that the key was stuck in the ignition. The contact had to use the key release to remove the key manually. No warning lights were illuminated. The vehicle was taken to an independent mechanic; however, no cause for the failure was found, and the failure persisted. The contact stated that on a separate occasion, while driving at an undisclosed speed, the vehicle failed to accelerate as intended while depressing the accelerator pedal, and the vehicle stalled. The contact was unable to coast to the side of the road. The steering locked up after the vehicle stalled. The vehicle was restarted; however, the failure persisted while driving a short distance. The vehicle was taken to an independent mechanic; however, no cause for the failure was found, and the failure persisted. The check engine warning light has been illuminated since the vehicle was purchased. The exhaust system, fuel lines, brake lines, and the engine had been replaced. The manufacturer was made aware of the failure and referred the contact to the NHSTA Hotline for assistance. The failure mileage was approximately 90,000.

Filed Jul 24, 2024 · Engine · OH

The car idles very low when stopped and sputters/putters like it's going to die. It has now actually died on me twice while driving, luckily when you put it in park and turn the car off and back on it starts right back up but you can see how this is a severe safety hazard. The first time it died I was stopped in the turning lane waiting on traffic to go by so I could turn left (this is the busiest street in town) I go to start turning left the car just shuts off mid turn crossing the other lane of the street, luckily I didn't get hit by oncoming traffic and was able to coast onto the side street that I was turning on and pull over and turn the car off and back on and drive it home. I took it to the mechanic and he can't figure out what's wrong with it so he gives it a tune up and now the check engine light won't turn off...fast forward to today it dies again at a stop sign with my [XXX] in the car. It is ESPECIALLY bad if you have the AC on it seems like it effects the electrical like the car is going to shut off when I am stopped and the ac is running, so I turned off the ac and it was still sputtering when I would stop but didn't die again. There is an entire thread of people with the same issue as me: [XXX] this car needs recalled it is a death trap. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Feb 5, 2024 · Brakes, Electrical · 260,000 miles · MD

The contact owns a 2010 Chevrolet Cobalt. The contact stated while driving 55 MPH, the power steering and brakes became inoperable. The driver was able to coast to the side of the road. The check engine warning light was illuminated after the failure. The vehicle was towed to her parent's residence. The vehicle was serviced by an independent mechanic, who stated that the failure was due to the ignition switch. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was contacted and stated that the vehicle was not covered under the recall. The contact stated that the failure was related to the federal safety agency Campaign Number: 14V171000 (Electrical System). The failure mileage was approximately 260,000.

Filed Oct 23, 2023 · Airbags, Engine · 120,000 miles · PA

The contact owns a 2007 Chevrolet Cobalt. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated, and the Service Air Bag message was intermittently displayed. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure but informed the contact that there was no recall associated with the VIN. The failure mileage was approximately 120,000.

Filed Jul 21, 2023 · Brakes, Electrical · TX

While driving the car, it will suddenly stall w the engine running but won’t react the use of the brakes, steering or gear shifter. It’ll suddenly jerk and the following lights will appear on dash :ABS, Power steering, no brake fluid warning, low fuel warning and check engine. All of the areas have been check and have all their fluids so this doesn’t make sense. We bought this car for our 16 year old daughter and the first time she drive it, a truck almost wrecked into her

Filed Jun 27, 2023 · Fuel system · 152,816 miles · AZ

The contact owns a 2009 Chevrolet Cobalt. The contact stated that there was a strong fuel odor coming from the vehicle while driving and while the vehicle was parked. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, where it was determined that there was a fuel leak. The vehicle was not repaired. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 152,816.

Filed Oct 11, 2022 · Engine, Fuel system · 97,600 miles · WI

The contact owns a 2009 Chevrolet Cobalt. The contact stated while operating the vehicle the check engine light would remain illuminated and the odor of fuel was present inside the vehicle. Upon inspection, it was discovered that the fuel had leaked from near the rear passenger-side wheel area. The contact discovered that the leak was due to a corroded and damaged fuel line. In addition, it was discovered that the fuel line connecting to the fuel filter was corroded and damaged. The vehicle was not yet repaired. The local dealer and manufacturer were not contacted regarding the failure. The failure mileage was 97,600.

Filed Aug 30, 2022 · Fuel system · 170,000 miles · IL

The contact owns a 2008 Chevrolet Cobalt. The contact stated that the vehicle was leaking fuel on the passenger’s side in front of the rear tire. The contact stated that the fuel odor was also inside the cabin of the vehicle while driving. The check engine warning light was illuminated. The contact had taken the vehicle to an independent mechanic and was informed that the fuel line had failed and needed to be replaced. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 170,000.

Filed Jun 30, 2022 · Fuel system · MI

The contact owns a 2010 Chevrolet Cobalt. The contact stated that while his daughter was driving at an unknown speed, she started to smell an abnormal fuel odor inside the vehicle. The contact stated that the check engine warning light was illuminated. The contact stated while inspecting the vehicle, he noticed a fuel leak on the rear driver’s side of the vehicle. The contact called an unknown local dealer and made them aware of the failure. The vehicle was not diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was unknown.

Filed Jun 13, 2022 · Steering · 189,000 miles · AZ

The contact owns a 2006 Chevrolet Cobalt. The contact stated that after starting the vehicle and attempting to reverse, the steering wheel was very difficult to turn. The check engine warning light was illuminated. The vehicle was not taken to a dealer or independent mechanic to be diagnosed or repaired. The contact did not notify the manufacturer of the failure. The failure mileage was approximately 189,000.

Related recalls

No recalls on record for this model year.

Questions about the Chevrolet Cobalt check engine light

Why does the check engine light come on in the Chevrolet Cobalt?

Owners who report it most often also describe engine stalls while driving, loss of power steering and sudden loss of power, and the codes they mention most are P0641, U2107 and U2105.

Which Chevrolet Cobalt years have check engine light problems?

The model years with the most reports are 2005 (90 complaints), 2006 (89 complaints) and 2007 (57 complaints).

How much does it cost to fix check engine light on the Chevrolet Cobalt?

Owners who mentioned a price put the repair at about $1,000 (median of 18 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.

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