Chevrolet Volt check engine light comes on

Filed Oct 24, 2026 · Electrical, Fuel system · UT

While driving through a canyon to get home, my check engine light came on and I saw the message "Propulsion Power Reduced" on my dash. The speed limit on that road is 65 mph, and I lost power going up a hill and went from 65 mph on cruise control to 48 mph. There are a lot of cars on that road, and it could've caused a serious accident. My vehicle does exactly what the GM extended coverage describes and is within the parameters, but somehow my vehicle does not qualify. This could've been bad on that road is it was raining or snowing.

Filed Oct 20, 2026 · Engine · 124,000 miles · OR

The contact owns a 2017 Chevrolet Volt. The contact stated that while driving at an undisclosed speed, the vehicle suddenly lost power. The check engine warning light illuminated, and the message "Propulsion Power Reduced" was displayed. The manufacturer was notified of the failure. The failure mileage was 124,000.

Filed Oct 19, 2026 · Electrical · 125,000 miles · UT

The contact owns a 2017 Chevrolet Volt. The contact stated that on several occasions while driving at 65-70 MPH, the vehicle lost motive power or experienced reduced motive power. The "Reduced Propulsion" message displayed, and the check engine warning light illuminated. Additionally, upon parking, the "Shift to Park" message displayed, causing the vehicle to fail to turn off until the contact pressed and held the Engine Start/Stop button multiple times. A diagnostic trouble code for the battery energy control module (BECM) was retrieved. The vehicle was taken to the dealer but was not diagnosed. The contact associated the failure with Special Coverage: N232432680 (Battery Energy Control Module Malfunction); however, the dealer informed the contact that the vehicle was not covered under the special coverage. The manufacturer was notified of the failure by telephone and advised the contact to file a complaint with the federal safety agency Hotline. The failure mileage was approximately 125,000.

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 Oct 1, 2026 · Electrical, Fuel system · WA

2017 Chevy Volt, lost propulsion and stalled on a highway in 3 separate instances. GM Case # XXX: The first instance, in late 2021, resulted in a BECM replacement. The following instances, XXX and SXXX, had the exact same symptoms: loss of propulsion on highway, shift to park, full charge but 0 range, check engine light. GM Case # XXX: In March the vehicle was towed to Haselwood Chevrolet in [XXX] and they told to check for BECM issues. The dealership refused to include the customer description of the failure on the highway, or acknowledge there was a possible BECM issue, since they said there was no BECM code. The failure presented as a classic intermittent BECM thermal failure. They failed to follow GM's diagnostic tree for an intermittent communication loss, as per GM Technical Service Bulletin PIP5812. Because of that diagnostics failure, I am now completely disabled, again, at [XXX],191 miles, 6 months later. This is a single, continuous warranty failure spanning from March through Sept 2026. GM Case # XXX: Due to previous misdiagnosis, I am awaiting GM’s pre-approval or referral for a rental car as covered by GM Special Coverage Program XXX, before having the car towed to Ruddell Chevrolet in [XXX]. I live a 2 hr round trip from [XXX] and am stranded without a loaner or rental. The tow truck is my way to the dealership to get a rental. If the BECM was recalled, these last two instances could have been prevented and I would not have had to fight tooth and nail with dealerships and GM for coverage, towing, and rental reimbursement, yet again. Please issue a recall on the Volt 2017 BECM and any BECM replaced before the soldering issue on these parts was corrected to prevent future dangerous failures and high levels of customer inconvenience and frustration. My 4 x JPEG and PNG attachments under 10MB failed to upload on this site. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 25, 2026 · Electrical, Fuel system · OH

FAILURE SUMMARY & SAFETY RISK: While operating in live traffic, the vehicle experienced a sudden loss of motive power and entered a "Propulsion Power Reduced" failsafe mode, creating a severe rear-end collision hazard. The vehicle is currently grounded and remains available for inspection upon request. WARNING SYMPTOMS & DIAGNOSTIC CODES: The instrument cluster illuminated the Malfunction Indicator Lamp (Check Engine), the ABS warning indicator, and displayed a persistent "Propulsion Power Is Reduced" message. A diagnostic trouble scan confirmed active high-voltage communication failures and powertrain faults: U2603 (Lost Communication with Hybrid/EV Battery Interface Control Module), P25A2 (Brake System Control Module Requested MIL), and ABS code C0500-00. PRIOR HISTORY & FAILURE TO CURE: This identical high-voltage Battery Energy Control Module (BECM) failure previously occurred in December 2025 at 97,808 miles and was presented to an authorized Chevrolet dealership for repair. The facility claimed the vehicle was repaired, but the exact same catastrophic high-voltage failure recurred in under 4,000 miles (at 101,635 miles). MANUFACTURER POLICY & OBSTRUCTION OF REPAIR: General Motors recognized this hazardous defect under Special Coverage N232432680 (covering BECM replacement for 15 years/150,000 miles at $0.00 cost). This policy links to GM Master Bulletin 07-00-89-037S mandating direct-bill Courtesy Transportation for grounded safety defects. Despite this, when presented for warranty repair, the authorized Chevrolet dealership explicitly refused intake and refused to honor the transportation mandate, stating on the record: "Yes, I do decline". GM Corporate (Case 98734634) admitted coverage applied but failed to compel franchise compliance, leaving a dangerous, immobilized high-voltage hybrid vehicle stranded without access to safety-mandated repair bays.

Filed Sep 10, 2026 · Engine · FL

3rd failure of EGR valve (GM part 12691147, superseded by 19436521) on this vehicle. 10/10/2019 at 11,336 mi: Check Engine Light and Driver Information Center displayed "Loss of Propulsion" message; EGR valve diagnosed as cause and replaced by dealer under warranty at no cost. 11/2023 at approx. 30,000 mi: EGR valve failed again; dealer stated OEM part was no longer available from manufacturer due to supply shortage and installed a third-party replacement part; repair not covered, paid out of pocket. 8/26/2026 at 49,864 mi: EGR valve failed a third time; a used, refurbished part was sourced due to continued unavailability of a reliable new OEM part, with repair scheduled for 9/14/2026, again paid out of pocket. This is a known, recurring failure on 2016-2019 Chevrolet Volts, referenced in GM Technical Service Bulletin 19-NA-206. The failure does not present only as an emissions fault — it triggers a "Loss of Propulsion" driver warning, indicating a direct impact on the vehicle's ability to be safely driven. Sustained unavailability of the OEM part is forcing owners toward third-party or used/refurbished parts of unknown long-term reliability, at repeated cost to the owner, in order to keep the vehicle operable.

Filed Aug 27, 2026 · Engine, Fuel system · TX

I was driving back from [XXX] on XXX, when I received a "propulsion power limited" message on my dash with a check engine light. I pulled off to a nearby gas station and tried to scan the code to figure out what was going on when I then received the message "Engine unavailable" and the car shut off. I checked the fuse box and found that the F03 Fuse had blown. I replaced the fuse and attempted to start the car again. It began normally, but then after driving 10 feet, I received the "engine unavailable" message again with a check engine light and the car no longer had power and I had to coast into a parking spot. I checked the fuse again and found it was blown. If I had not stopped in the gas station, I would have been stranded on the side of the highway, or worse yet, I would have stalled out on the highway and potentially got hit. I had my car towed to a dealership who eventually completed their inspection of the car on XXX and determined that the EGR Valve had failed (the servo motor burned out and blew the F03 Fuse). This is a well known issue on the 2nd Generation of Volts and it is likely faulty servo motors in the EGR valves. The Dealership even included in its financial assistance request to Chevy on my behalf that the EGR valve failure is a known issue. When asked if there was any preventative maintenance suggested to prevent the EGR valve from failing, the service technician indicated that there wasn't anything that I did as the end user to cause the problem. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 18, 2026 · Electrical · 95,000 miles · NC

The contact owns a 2017 Chevrolet Volt. The contact stated that he had experienced a recurring loss of propulsion that would occur shortly after vehicle startup, which was attributed to a failure with the Battery Energy Control Module (BECM). The failure caused the check engine, ABS, Stabili-Trak, and Forward Collision Avoidance warning lights to illuminate. The contact informed the local dealer of the failure and was referred to the manufacturer for assistance. The manufacturer acknowledged that there was a Customer Satisfaction Program for the failure, but the vehicle was not included. The contact was referred by the manufacturer to the federal safety agency Hotline to report the failure. The vehicle was not repaired. The failure mileage was approximately 95,000.

Filed Aug 17, 2026 · Fuel system · OR

I was driving on an interstate in Seattle, and the car completely died. A check engine light went on. I had to roll into the shoulder and call for a tow to the dealership's service department. Here is what they found: ----60GCZ ENGINE REPAIR DIAG/ customer reports the ses lamp is on with reduced propulsion message displayed. Check and advise. 1. Tested vehicle and verified reduced propulsion power message and SES light. Scanned vehicle for codes and found multiple P0489, P0030, P0031, P0132, P0135, P0137, P0443, P0458, P0597, P0598, P06DA, P06DB, and P103C. Traced back to no power on circuit 5293. Traced back to blown 15-amp fuse 3 of under hood fuse block. Found bulletin #24-NA-080 stating this can be caused by a short in the EGR valve. Tested circuit 5293 and found short at the EGR valve. Advise EGR valve and cooler replacement then retest.---- We disconnected the EGR valve, which means we are driving only on gas, not electric. We cannot charge it anymore. The cost to replace the valve and cooler is over $4k because Chevrolet does not make the vehicle anymore or the EGR valve part apparently. This is a SIGNIFICANT safety hazard if the car is going to simply die suddenly. It is a miracle I did not get hit.