Owner-reported complaints naming the engine system, filed with NHTSA
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Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components. Every record below is an owner-reported complaint about the 2016 Chevrolet Volt submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 49 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
The 25 most recent of 49, in the owner's own words
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.
Component/System Failed: The engine of my 2016 Chevrolet Volt experienced a sudden internal crack, leading to complete engine failure. The engine is available for inspection upon request. Safety Risk: The engine failure rendered the vehicle completely inoperable, posing potential risk if it had occurred while driving. Sudden loss of engine power could have caused a crash or left me stranded in traffic, endangering myself and others. Problem Reproduction / Confirmation: The failure was confirmed by a GM dealership, which performed a full inspection and documented the engine crack. The dealership verified that the crack was sudden and not caused by negligence or improper maintenance. Inspections by Others: The vehicle has been inspected by the dealership, and all reports are available. I have also submitted the issue to GM corporate for warranty review. No police or insurance representatives have reviewed this, as this was a mechanical failure with no collision. Warning Lamps or Symptoms: No warning lights, messages, or unusual symptoms appeared prior to the failure. The engine appeared to operate normally until the sudden failure. Upon failure, low oil and low propulsion error message appeared on dash. Current no dash lights are on in the vehicle. Assessment of Cause: Based on dealership inspection and documentation, the failure appears sudden and possibly related to a defect in emissions-related engine components. No external damage or user error contributed to the failure.
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.
Becm failure Car suddenly stopped driving and or starting Had to have it towed home
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
BECM failure leaving car stranded in traffic with no ability to move under its own power.
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.
Shift to park message & audible alarm. Display while in motion pulling into home driveway. Vehicle stalled midway while in motion. Halfway in the street & half driveway. Displaying propulsion power reduced & Engine not available service soon. After 30 minutes of starting & restarting was able to move out of the street. However vehicle will NOT move. Transmission will shift, however will not move. Shift to park keeps popping up.
Faulty micro-switch from factory, causes power surge. Flawed microswitch in transaxle shift cable. Incomplete connection of microswitch resulting higher voltage to PCM.(power control module) This irregularity, shows a DTC code reducing power propulsion during movement. The car will loose power & ability to shift. During driving movement. Quite a safety concern. A "shift to park" error displays on driver display screen. An OBD2 scanner will clear code & after a few attempts remain operational. However intermittent & unpredictable when to expect the loss of traction power.
The vehicle loses power when trying to accelerate when driving in electric mode, and the gas engine kicks on after a second at which point acceleration returns. It occurs when the battery power is high or low. Sometimes a warning pops up on the dash saying speed is limited to a specific MPH.
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.
The contact owns a 2016 Chevrolet Volt. The contact stated while driving at an undisclosed speed, the "Engine Propulsion Reduced" message was displayed, and the vehicle was driven to an Auto Parts store. The contact called the local dealer and was advised to replace the propulsion fuse in the vehicle. The contact purchased a replacement fuse and replaced the faulty fuse. The vehicle was driven to the dealer two days later to be diagnosed. The vehicle was diagnosed, and the contact was informed that the EGR valve had malfunctioned and needed to be replaced. The manufacturer was notified of the failure. The approximate failure mileage was 60,000.
The Exhaust Gas Recirculation (EGR) valve failed. Confirmed by dealer, Culver City Chevrolet, 8/29/2024. Failed EGR valve causes gas engine to emit harmful smog forming emissions. This part is still covered by 10 year, 150,000 mile warranty. However, GM/Chevrolet has not made a replacement available and GM representatives have provided no estimate of when or if that replacement part will be made available.
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."
Car displayed a lower power mode on dashboard. Approximately 20 miles later car switched from gas mode to electrical battery mode. Fortunately there was some charge remaining in the battery that I was able to get off freeway and charge car for 3 hours to make the 30 miles home. Dealer thinks problem is a defective EGR valve and I am awaiting a part for this repair for 37 days and counting. The low power mode states it is limited to 35 KW of power but I was surprised when the engine cut off to battery mode. If I had used up the battery charge on the first portion of this trip I do not know how suddenly the car would have stopped on freeway.
The car has experienced a ‘BECM’ failure, which is very common on the Chevy volt. When it fails the car becomes undrivable and will slow down into reduced propulsion mode. It will not start and required us to have it towed to the dealer. The 2016-2019 Chevy volt BECM issue has been investigated by the nhtsa and gm. It is a common enough issue that gm has voluntarily issued ‘special coverage N232432680’. This covers the becm failure on 2016-2019 volts for free for up to 150k miles 10 years. We have a 2016 volt with 144k miles so we assumed it would be covered. The dealer said it wasn’t covered based on my vin but they didn’t know why our vin was left out of the coverage. Obviously if they thought our car didn’t have a suspect becm, they were wrong because it failed during the special coverage time. The repair is $2600 and gm will not assist us with this repair. I have attached a copy of gm special coverage and the bill. This seems to be a clerical error that our vin and maybe others were missed despite the fact our car falls right in the special coverage criteria. I believe this should be a full recall or 2016-2019 volts, especially if the becm has failed.
The EGR valve failed, blew up a fuse, and the internal combustion engine started to overheat and run very roughly and unsteady. I almost lost control
The EGR valve in the 2016 Chevy volt will fail blowing fuse 3 which will also take out the engine oil pressure control solenoid, the evap emission purge solenoid valve, the engine coolant thermostat heater, and the oxygen sensor 1 as they all share the same fuse. The car will tell you that the engine is unavailable and, if you are out of hybrid battery power, will leave you unable to move the vehicle. In my particular situation it left me stranded blocking one lane on a two lane s-bend road on a 5-9% grade mountainside with no cellphone reception. Thankfully the car stopped far enough away from the previous bend that people had time to see me and I didn't get rear-ended. If I had stopped 20 feet sooner that likely would not have been the case. The replacement part for the EGR valve is impossible to find as it is back ordered everywhere and places that will let you back order it will try to charge $1927 just for the part (no installation service included). If you live in a state without emission checks then you can unplug the EGR valve and replace the fuse but that means your producing more pollutants. Until GM gets their act together and offers affordable replacement parts I don't see another alternative.
EGR valve failed. When switched from Battery to gas car stalled and we were stuck. Dealer said it needs a new EGR valve. But it was on back order. This was a year ago and Chevy still claims the part is on back order! Now the car is ready to renew registration. But it cannot pass inspection because it must have been driven on gas for many miles for the inspection to work! The part is obviously no longer available and Chevy has not offered a solution.
I was driving in clear weather (with my ICE engine as propulsion) when an Engine Warning Fault light appeared on my dash and the vehicle slowed to 5mph with no response from the throttle pedal. I pulled into a parking lot, had the vehicle towed to an independent service shop, and had them check the codes. There were a dozen faults stored, but they found the 'Non Walk Home' fuse had blown, and faults pointed to the EGR Valve as having faulty electronics. They could not find an EGR valve for sale so they unplugged the EGR Valve and replaced the fuse, which allowed the engine to drive normally again, but with the Check Engine Light on at all times. I called my local Chevy dealer and they told me the EGR I needed was Part Number 12691147 for $243, but they were backordered and there were dozens of people in front of me for their dealer alone. Now, 11 months later, I'm still waiting on the part, I have found hundreds of other Volt owners online with the same issue, and the Part Number has been changed by GM to 19436113, with a price increase of 1100% to $2642. And the part is still not available because of "high demand" on a car that was discontinued five years ago.
There is a propulsion warning due to faulty EGR valves. Many customers are experiencing backorders lasting for up to 6 months or more, just from what I can quickly find online. I am now on my 5-month mark. I have not been able to drive the car at all. Driving it could damage the engine and put drivers at risk. Because many of these vehicles no longer qualify for lemon laws, the manufacturer seems to not take our delay seriously or even care about our limited resources in time and money. (I purchased this used car that was in great condition and passed the inspection for about $13,000 in-full. I am not wealthy so this was an expense I was carefully saving for. I was only driving it for weeks before this happened. I am now hunting for my legal options.) Not only is their response completely unethical and inconsiderate, but some desperate drivers are suggesting to unplug the EGR then replace the fuse. This can damage engines further, disallow us to pass emission tests, and cause possible danger to the driver and others on the road. Chevy and GM need to be held accountable!
2016 Chevy volt started to not shut off with the message that car needed to shift to park. Car is just over 100,000 miles (104,000) spent a few weeks jiggling shifter to get car turned off then made an appointment at Platinum Chevy of Santa Rosa. While waiting we researched the issue to find that the Shift To Park is a known issue and the Volt has in fact been named in a class action suit. Am currently at crossroad as I cannot get GM to stand behind their product. It’s taken four calls and an escalation to management to find out that they may offer a percentage to fix the problem but because we’re out of warranty it is a customer problem. So, to cap it off, GM has sold us a vehicle with a known safety issue with no recall and will not fix their problem.
Started vehicle with > 50mi on the EV-range. Pulled out onto road, stopped at red light. Now showed 0mi and refused to move when pressing the gas (did not fail over to gas on series PHEV) Garbage truck coming up behind me had to swerve to avoid rear-ending me as I was frantically trying to start the car. Kept saying 'shift to park' (condition required to start the vehicle) Took several minutes and 20+ tries before I got it to start (GAS engine) and was able to proceed. Car keeps randomly dropping to 0mi EV range. Has refused ot start on occasion. All symptoms align with the N232432680 bulletin but GM saying my car isn't covered???
My 2016 Chevy Volt experienced a loss of propulsion power multiple times due to the EGR (Exhaust Gas Recirculation) valve failing. The malfunctioning EGR valve caused the F3 fuse to break, disabling the cooling system and forcing me to pull over immediately, which posed a safety risk, especially in high-traffic areas or on highways. The problem was reproduced when the replacement EGR valve also failed. It is not specified if the vehicle or components have been inspected by the manufacturer, police, insurance representatives, or others. Both the original and replacement EGR valves should be available for inspection upon request.
On [XXX], this Volt was towed to the Dealer because the Volt would not start, would not charge, and the engine light was on. The Dealer claimed that the problem was the Chevrolet Volt Battery Energy Control Module (BECM), GM Part # 24296900, which was covered under the GM hybrid VOLTEC warranty (8 years, 100,000 miles). On [XXX], 2024, this Volt (VIN [XXX] ) was towed to the Dealer again because the Volt would not start, would not charge, and the engine light was on. The Dealer claimed that the hybrid battery connectors were corroded, the disconnect relay should be replaced, and the BECM should be replaced again at a total cost of $5,005.58. On [XXX], GM issued special coverage warranty N232432680 (15 year, 150,000 miles) to cover BECM replacements for a malfunction involving the BECM. Plaintiff checked the VIN at the GM Recall and Warranty Center website. The Volt at issue is covered under special coverage warranty N232432680, according to the GM website. Plaintiff asked the Dealer and GM again after [XXX] about warranty coverage for the BECM at issue. GM responded that the bumper-to-bumper warranty expired and that they would provide no assistance. On [XXX], Plaintiff filed a complaint with the local Better Business Bureau (BBB) regarding the BECM at issue. GM responded in writing that the bumper-to-bumper warranty expired and that they would provide no assistance. Plaintiff sought arbitration, but both the local BBB and the BBB Auto Line found that Plaintiff was not eligible to arbitrate with GM due to GM’s program summary guidelines with the BBB. GM breached multiple warranties and failed to provide sufficient repairs, and this Volt has been out of service for more than 80 days. Based on GM’s warranty breaches, insufficient repairs and inconsistent statements, this Volt poses serious safety concerns. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Categories with enough reports to have a page of their own
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