2016 Chevrolet Volt: check engine light

Filed Oct 14, 2026 · Fuel system · GA

BECM failed reducing propulsion. Known issue with several volts. Yes. Propulsion reduced. No start. Stuck in middle of street. Yes. Confirmed by dealership service department that becm is bad. Check engine, propulsion reduced, shift to park. Started appearing intermittently around 84000 miles.

Filed Jun 30, 2026 · Fuel system · TX

The Battery Energy Control Module (BECM) on my 2016 Chevrolet Volt has failed. The vehicle and the component are currently located at my home address and are available for inspection upon request. As of writing this now. This failure caused the vehicle to enter a "reduced power mode" and subsequently resulted in a no-start and no-charge condition. The sudden loss of propulsion power presents a severe safety and crash risk, as the vehicle can lose motive power and stall unexpectedly while in transit. Prior to the complete failure, the vehicle displayed a Check Engine Light and a "Reduced Propulsion Power" message on the dashboard. The local Chevrolet dealership has inspected the vehicle, pulled the associated diagnostic trouble codes, and officially confirmed that the BECM has failed. General Motors has already acknowledged this specific safety defect through Special Coverage Bulletin N232432680, which extends BECM warranty coverage to 15 years or 150,000 miles to prevent sudden loss of propulsion. However, GM corporate and the dealership are refusing to honor this bulletin. They are denying coverage due to an administrative database flaw because my vehicle's under-hood VECI label designates it as an original California (CARB/PZEV) vehicle, GM's system excluded my VIN from the Special Coverage bulletin automation. Furthermore, because the vehicle is currently registered in a non-CARB state (Texas), the original CARB warranty is considered void. GM is using this internal database loophole to deny repairing a documented safety defect.

Filed Mar 11, 2026 · Fuel system · OR

After experiencing loss of power and loss of propulsion on the highway, took the car to Tropical Chevrolet in Miami Shores, FL. after diagnosing the car for $287.37 (credited to the estimate total of $3101.20), the dealership replaced the Battery Energy Control Module and bled the battery pack cooling system. We paid the bill ($2665.89). On January 4, 2026 the check engine light came on again when the propulsion was reduced again, while driving on a highway. Tropical reported that the cause of the failure was their failure to replace or do the original repair at all. They replaced the exhaust gas recirculation valve and refilled the cooling system. The parts should be covered by warranty. We filed a claim with GM 2 months ago and still have not been reimbursed.

Filed Feb 10, 2026 · Engine · NC

The engine light came on, but the car would run and so took it to the dealer. They determined that the EGR valve had failed and would cost $2400 to repair. Apparently, this is a common failure point for Generation 2 Chevy Volts. If it might trigger a forced recall, I'd like to add this to the list.

Filed Jan 29, 2026 · Fuel system · CA

In May 2025, the EGR (Exhaust Gas Recirculation) valve failed on my 2016 Chevy Volt with approx. 60,000 kms / 40,000 miles on it - that cost me approximately $3,000 to fix. In my opinion that should have been covered under warranty given that it is a common failure point on second generation Volts. Note that the EGR value (OEM - Original Equipment Manufacturer) is a readily available part. In October 2025, my BECM (Battery Energy Control Module) failed. Luckily, due to significant Volt owner complaints, GM was forced to provide a special warranty on this item, so the work that would have cost me approximately $4,000 was covered under this special warranty. The BECM is covered for my 2016 Chevy Volt until 2030. Note again that the BECM is a readily available OEM part. In December 2025 my Chevy Volt check engine light went on again, and this time the Chevy Dealership is telling me that the main hybrid battery needs to be replaced. However, GM decided in their infinite wisdom to discontinue production of the Chevy Volt battery, and so they can't even sell me a new hybrid battery, a critical component on this vehicle. My understanding is that the 2016-2019 Chevy Volt battery is the same part #24060122. The Chevy dealership has asked me to see if I can find a battery on my own, as their parts department cannot source one (GM used "York Electronics" in Canada). As a result, I am now left with trying to find a used/refurbished hybrid battery. If my Volt was a 2019 (the last year GM made the Volt), then this battery would be covered under warranty (8 years from in service date), yet GM wouldn't even be able to fix a 2018 or a 2019 Chevy Volt because they stopped making the battery for ALL Volts. How can a manufacturer get away with not even providing parts for 10 years (in my case), or 7 years (2019 Volt)? My only option seems to be to send a perfectly maintained car to the junkyard at 60,000 kms/40,000 miles. Never again will I buy GM.

Filed May 14, 2025 · Electrical, Engine · WA

While driving the car displayed “reduced propulsion power” on the dash and then I lost all drive power and could not switch the plug in hybrid from electric to gas engine mode. The vehicle had to be towed to the dealer who stated that the battery electronics control module and perhaps the battery needed to be replaced. The check engine light came on slightly before the incident.

Filed Feb 7, 2025 · Electrical, Engine · CA

On [XXX] the check engine light turned on in my 2016 Chevy Volt (VIN: [XXX] miles 145,xxx). I was 2 hours from home in the freezing cold snow but thankfully the vehicle allowed me to drive home without any issues (no reduced propulsion power). When I returned to the vehicle to have a diagnostic check the error light disappeared and I was unable to check for error codes. Still no issues driving under EV/gasoline. Later that day, the car stopped going completely, no shifting out of park either. EV range was reporting 0 miles despite having full charge. I plugged in the charger but it would not work (first time this happened), " Not able to Charge" message displayed. After cycling power the EV range was full range and I was able to shift into drive again. These issues were intermittent over 3 weeks, frequently standing me temporarily. After cycling power, opening and closing the door, cycling power again, the car would function normally and I could drive under battery or gasoline power. I managed to capture these error codes while the MIL light was on: U2603, U2604, U2605, U2606, U2617, U2618, U2619, U2620, U2621, U2622, U2623, U2624 [XXX] my vehicle no longer drives or shifts out of park, "Not able to charge" message displayed, CEL light on. A class action lawsuit revealed a technical service bulletin 18-NA-261 released in 2018 (see attached) accusing GM of continuing support of the known faulty module. The result of the case was Special Coverage Bulletin N232432680 which acknowledges and addresses the above mentioned issues by replacing a faulty BECM common to ALL Chevy Volt models years 2016-2018. My VIN is EXCLUDED from coverage due to being a CARB compliant vehicle despite exhibiting the same behaviors, error codes, and sharing the same faulty BECM. Of the 60,000 Volts sold in 2016-2018, only 19,000 (~33%) qualify under the special coverage terms. 100% of the vehicles that qualify for coverage are NON-CARB compliant. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552

Filed Jan 14, 2025 · Electrical · 95,000 miles · MA

The contact owns a 2016 Chevrolet Volt. The contact stated that while the vehicle was parked, the check engine warning light illuminated. The contact used a scanner and retrieved DTC: U2603-U2606 and U2607-U2622. The dealer was made aware of the failure. The vehicle was scheduled for an upcoming diagnostic test. The vehicle was not yet diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 95,000.

Filed Dec 3, 2024 · Engine · NC

EGR valve has failed leaving me stranded on side of the road. Problem was confirmed by a Chevrolet dealership. Engine light came on moments before it happened.

Filed Nov 6, 2024 · Electrical, Fuel system · MD

My experience is proof for the investigation on “loss of motive power, including a stall, reduced power state, and/or a no-start condition due to the Battery Energy Control Module (BECM).” My safety and the safety of others were affected because the reduced engine propulsion caused me to drive at a max speed of around 50 mph, and eventually the car left my stranded a few weeks later when it would not start at all in a parking lot. The gas engine would run at an extremely high RPM to make up for the failure of battery propulsion. The dealer covered the work under warranty. The work was performed during the pandemic chip shortage in 2022 and my car was at the dealership for two months from about August to October. The check engine light would come on sporadically before the problem started, and when the failure would occur, I would get a “Propulsion reduced” message in the driver screen and the gas engine would kick on to an extremely high RPM even when the car should have been running on battery. Accelerating from a stop to a normal speed would sound like you are flooring down the accelerator to get on a highway on-ramp. I no longer have the paperwork to confirm this, but it was performed at the Fort Collins (Colorado) Dellenbach Chevrolet dealer, it may be possible for me to get the paperwork, but I no longer live in Colorado. The process went all the way up to corporate Chevrolet before the warranty was honored, and I was compensated with company points.

Filed Oct 3, 2024 · Electrical, Engine · CA

Took the car in for service to Simi Valley Chevrolet on 8/16/2023 due to the check engine light illuminated on dashboard. They determined that the EGR valve had internally shorted so they unplugged it so as not to take down the rest of the system and placed a special order for the valve. It has now been over one year and they still don't have the replacement part. The car runs rough and occasionally stalls and sputters. I'm concerned that the car could stall while driving and is unsafe.

Filed Sep 19, 2024 · Engine, Fuel system · MI

Check engine light came on. Moran Chevrolet dealership says the code is related to the EGR cooler and EGR valve. They want me to pay $3,175.23 for these two parts - however, they can't guarantee that I will get the parts as they are on backorder, and no idea when they will get parts. This is outrageous. I asked, "What if the part doesn't come in?" The dealer's response, "Then we will refund your money, but, we will keep $250 for inspecting the car." "And what if I don't fix it?" Their response: "Eventually, your car will stop working." "What if the car is on the freeway and just stops?" Their response is unsettling for me and hopefully every driver on the road: "We haven't seen that type of failure, yet."