2023 Chevrolet Malibu: check engine light

Filed Oct 29, 2026 · Engine · 46,000 miles · GA

The contact owns a 2023 Chevrolet Malibu. The contact stated that the check engine warning light was constantly illuminated, and the message "Engine Reduced Power" was displayed while depressing the accelerator pedal. The vehicle was taken to the dealer, where it was diagnosed and determined that the turbo charger assembly had failed and needed to be replaced. The contact declined to pay for the repair. The manufacturer was notified of the failure by phone and informed the contact that the vehicle was not covered under warranty. The contact continued driving the vehicle, and the failure persisted. As per the manufacturer’s guidance, the vehicle was taken to Maxie Price Chevrolet Atlanta (3600 Atlanta Hwy, Loganville, GA 30052), and the turbocharger assembly failure was confirmed, and the contact was informed that the part needed to be replaced. The manufacturer was notified of the issue but denied assistance because the vehicle was not included in Special Coverage Program: N252508360. The failure mileage was approximately 46,000.

Filed Jun 12, 2026 · Engine · 68,000 miles · NC

The contact owns a 2023 Chevrolet Malibu. The contact stated that while driving at an undisclosed speed, the vehicle intermittently entered LIMP mode. The message "Turn off to Reduce Power Failure" was displayed, and the vehicle failed to exceed 40 MPH. The Check Engine warning light was illuminated. The vehicle was taken to an independent mechanic, where the cause of the failure was unidentifiable. The independent mechanic cleared the diagnostic trouble code; however, the failure persisted. The vehicle was taken to a different independent mechanic, where it was diagnosed that the turbocharger had failed and needed to be replaced. The contact related the failure to an unknown the federal safety agency Campaign Number; however, the VIN was not included. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline to report the failure. The failure mileage was approximately 68,000.

Filed May 28, 2026 · Engine · 85,000 miles · GA

The contact owns a 2023 Chevrolet Malibu. The contact stated that while driving 55 MPH and depressing pedal, the vehicle failed to respond as intended. The check engine warning light illuminated, and the message "Engine Power Reduced" was displayed. The contact stated that the failure occured intermittently. The vehicle was taken to the dealer, where it was diagnosed that the turbo charger had failed and needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was not contacted. The failure mileage was approximately 85,000.

Filed Apr 22, 2026 · Engine, Transmission · SC

The issue appears to involve the engine and turbocharger system. The vehicle has shown symptoms consistent with a turbo underboost condition, including loss of power and reduced acceleration. A mechanic indicated that the symptoms may be consistent with diagnostic code P0299 (turbo underboost). The vehicle is available for inspection upon request. This issue affects safe operation because the vehicle loses power unexpectedly while driving, which creates a risk when merging into traffic, accelerating, or maintaining speed in normal traffic conditions. The loss of power is inconsistent and can occur without warning, increasing the potential safety concern. The problem has been ongoing. The check engine light is currently on and has remained on. The warning light first appeared around January 2026, and the issue has continued since then. Similar turbocharger-related issues have been reported in prior model years, including 2022 Chevrolet Malibu vehicles, where coverage or corrective actions were provided, raising concern that the same or similar issue may be affecting 2023 models.

Filed Apr 14, 2026 · Engine · GA

My engine keeps decreasing and throwing code p0299, wastegate/turbo, under boost. 84k miles. After a few drive cycles, engine light may go off, then next drive cycle come back on. I’ve seen this is a common issue and has been recalled in previous year model.

Filed Mar 9, 2026 · Engine, Transmission · 57,619 miles · OK

The contact owns a 2023 Chevrolet Malibu. The contact stated that while driving 75 MPH, the vehicle jerked abnormally with several unknown warning lights illuminated and unknown messages were displayed. Additionally, there was a white fuel warning light illuminated with the message “Low Fuel” displayed after refueling the vehicle. The white exclamation warning icon with the "Shift to Park" message, the check engine warning light was illuminated, and the “Engine Power Reduced message was displayed. Additionally, the power train and ESC warning lights were illuminated. The vehicle was pulled over to the side of the road and towed to the residence. The vehicle was taken to a dealer, but the failure was not replicated; an aftermarket tracker was disconnected. The failure persisted, and the vehicle was taken to the same dealer, where it was diagnosed and determined that the battery needed to be replaced. The vehicle was repaired, but the failure recurred the following week. The vehicle was then taken back to the same dealer, but the failure was not duplicated. The manufacturer was not notified of the failure. The failure mileage was 57,619.

Filed Oct 13, 2025 · Electrical, Engine · TX

Check engine light will come on entire car will shut off. Shuttering, braking locks up, all power is reduced, especially engine power. car will get towed to the Chevrolet dealership in temple, Tx and Killeen, Tx for repairs. When hooked up to the scanner all 7 modules show as faulty. Chevrolet of Killeen replaced only 3 of the modules stating that was the issue. two days after repair same issue has happened. when hooked up to the scanner again all modules were faulty again including the ones that were just repaired. car has been in the shop for 100 days now. the car will cool down, and the check engine light will reset itself showing no issues repeat the process.

Filed Jul 11, 2025 · Engine, Fuel system · OH

At 40,000 miles, check engine light illuminated. Code reader stated P023F fuel pump secondary circuit open. When trying to take 2023 Malibu to dealership for repairs car would not start. Had to have car towed to dealership. Dealership confirmed same fuel pump error code. Confirmed no recall. Car is currently being repaired by dealership at my expense as dealership & GM says fuel pump is not covered by powertrain warranty. Cost is over $1500! Fuel pump should last longer than 40,000 miles! Please research this faulty fuel pump!

Filed Nov 14, 2023 · Engine, Fuel system · GA

After purchasing a brand new chevrolet malibu, about 4 months into droving it; the check engine light illuminated and the next day, an error message of “engine power is reduced” was displaying on the dash. The vehicle was turned over to the dealership and two different sensors were replaced. After a day of having the vehicle back after repairs, the check engine light illuminated again. I returned the vehicle to the dealership and was later told that they were unable to duplicate the scenario and the check engine light did not appear anymore. I picked the vehicle up and after another day of driving, the check engine light illuminated for the third time, again with the same engine power reduced message. Vehicle was slow to accelerate from a stop position. The dealership claims to still be unable to duplicate the scenario with no fix at this point.

Filed Jun 29, 2023 · Engine, Fuel system · GA

This vehicle has been taken to Days Chevrolet on two different occasions no check engine lights will come on but as you drive it surges and almost cuts off at times I have taken it in for this problem may 1 2023 and June 19 2023 every time they tell me the car is running as it should it also has a popping and rattle in right rear and they say they can't duplicate the problem. This car is going to kill someone