Fault Code Lookup › Network codes › U2624
U2624 Network · manufacturer code
U2624 fault code: what 10 Chevrolet owners reported
U2624 is a manufacturer-specific network code (network: communication between the car's control modules), so its exact definition belongs to the carmaker and is not in the generic OBD-II list. What it meant in practice is below, from 10 complaints owners filed with NHTSA. Updated November 9, 2026.
- 10owner reports
- 1car model
- 0mention a crash
- 0mention a fire
- 2016–2018model years
Which cars get code U2624?
Every model whose owners mentioned U2624 in a complaint, most reports first. Each year opens that car's full problem report. Popular models collect more reports because more of them are on the road.
Where does U2624 show up?
By brand
- Chevrolet10
Component the owner filed it under
Is there a recall for U2624?
As of November 9, 2026, no NHTSA recall on the cars reporting U2624 names this code or its most-reported component. Recalls can be issued at any time: check your VIN at nhtsa.gov/recalls.
What happened when owners saw U2624?
10 of the 10 reports, spread across the models above, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.
My 2018 Chevrolet Volt LT (VIN [XXX]) suffered a Battery Energy Control Module (BECM) failure at 142,185 miles. Gandrud Chevrolet in [XXX], diagnosed the failure, citing GM Technical Service Bulletin 18-NA-261 and diagnostic codes U2619, U2620, U2621, U2622, U2623 and U2624. The dealer replaced the BECM (part 24296900), programmed it, and performed associated work. The repair was completed XXX. The invoice was $3,160.70; I am seeking $3,066.25 in reimbursement for the qualifying repair expenses. GM denied coverage because my VIN is excluded from Special Coverage XXX, despite the dealership-confirmed BECM failure. I pursued the matter through GM Customer Assistance (case 106790207), mediation…
…The dealer retrieved DTCs U2624 and U2629, performed circuit testing, and diagnosed an internal short in the BECM causing loss of communication with high-voltage battery modules. The dealer stated this failure caused the warning light, starting issue, sudden loss of indicated battery range, and air-conditioning symptoms. The BECM was replaced and programmed after removal of the high-voltage battery assembly. The warning light first appeared about one month before repair, with the other symptoms becoming more apparent in early July 2026. The vehicle had approximately 80,918 miles when inspected. The failed component was retained by the dealership as a core and is not available to me for…
While driving at highway speeds over 100 miles away from home with my child in the vehicle, the car experienced a sudden, catastrophic loss of propulsion power and entered 'Propulsion Power Reduced' mode, dropping vehicle speed immediately and creating an extreme hazard with high-speed highway traffic. A full computer scan revealed active diagnostic codes U2603 through U2624, confirming an internal hardware communication failure of the Battery Energy Control Module (BECM). This matches GM Technical Service Bulletin 18-NA-261. The vehicle has over 150,000 miles, but I have only owned the car since January. This is a known, systemic manufacturing defect (cracked internal circuit board solder…
…B101D P1EOO P1EAC POAFA B3111 U3001 U2401 U2603 U2604 U2605 U2606 U2617 U2618 U2619 U2620 U2621 U2622 U2623 U2624 P1FD1 P1FD2 P1FD3 P1FD4
Following a day trip involving sub-freezing temperatures and full depletion of the traction battery, the vehicle was plugged in at home and appeared to be charging. The following morning, I enable the preheat via the remote before leaving the house for work, and notice the CEL/MIL before starting the car. Car was cold, charging indicator was flashing green as if it was accepting charge. I went to investigate and was met with the following list of codes: P1E00, U2603, U2604-U2606, U2617-U2624, P1FD2, P1FD3, P3042, C326C, P0096. Car turns on but seems to only be accessories; no power steering. Seems like the state of charge indication kept transitioning from empty to full. I unplugged the car…
My 2017 Chevy Volt is having Battery Energy Control Module (BECM) issues. I receive the occasional error message of "propulsion is reduced" and engine fault codes of P1E00, U2619, U2620, U2621, U2622, U2623, and U2624. GM issued a Special Coverage bulletin (N232432680) extending the warranty for the Battery Energy Control Module (BECM) on 2016-2018 Chevy Volts to 15 years/150,000 miles. My Chevy Volt is within this year and mileage range, but for some reason my Chevy Volt VIN is not included in this Special Coverage (N232432680), which means that this special coverage for some reason doesn't apply to my 2017 Chevy Volt, even though it has the same issue. Is there a way that my 2017 Chevy…
My experience required me to tow my 2017 Chevy Volt from a parking garage, where the BECM died, to 2 different dealerships back and forth to my home. I have been charged over $1,000 in towing and diagnostics at my local dealerships. As usual they informed that I need a new $10k battery. I did my own research and the error codes (U2603, U2604, U2605, U2606, U2617, U2618, U2619, U2620, U2621, U2622, U2623, U2624 and P1E00) clearly indicate that my BECM failed. I was able to check the health and status of the traction battery and it functioning correctly. On my 3rd trip to my local dealership service department with the Special Coverage Program N232432680 in hand, the dealership informed me…
…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…
Becm module is failing currently we have an engine check light that illuminates every other drive. Started November 26th. We experienced reduced propulsion message . We have experience the car not going into gear to drive or go reverse. It seems these issues occur at random. Check light codes are u2619-u2624. A dealership will be taking a look at the car on Monday
ERRORS: "UNABLE TO CHARGE", U2619, U2620, U2621, U2622, U2623, U2624, UB2AAA, BECM NEEDS REPLACING; ALSO "SHIFT TO PARK" ERROR IS VERY COMMON IN THIS CHEVY VOLT.
U2624: questions drivers ask
What does code U2624 mean?
U2624 is a manufacturer-specific network code (network: communication between the car's control modules), so its exact definition depends on the carmaker and is not in the generic OBD-II list. 10 owners reported it to NHTSA, most often for the Chevrolet Volt (10); their reports describe what happened.
Which cars get code U2624 most often?
In NHTSA owner complaints, U2624 is mentioned most for the Chevrolet Volt (10), across 1 model and model years 2016 to 2018. Popular models collect more reports because more of them are on the road.
Is there a recall for code U2624?
As of November 2026, no NHTSA recall on the cars reporting U2624 names this code or its most-reported component. Recalls can be issued at any time, so check your VIN at nhtsa.gov/recalls.
What should I do if my car shows U2624?
Write down when the code appeared and what the car did (warning lights, loss of power, noises, speed, weather). Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer or independent workshop to read the stored freeze-frame data before anyone clears the code, and keep the repair order. If the car loses power in traffic, stop driving it. CarHooq does not diagnose: these are owner reports and official recall notices, not repair advice.
How this page was made
CarHooq read the text of every owner complaint filed with NHTSA for 19 US and European brands (model years 2012 onwards) and picked out the diagnostic trouble codes owners wrote down. This page lists every mention of U2624. Manufacturer codes have no public standard definition, so CarHooq shows only what owners reported. Nothing here is a diagnosis. More answers: the fault code FAQ. Data: NHTSA Office of Defects Investigation (public domain), retrieved November 9, 2026. How CarHooq reports are made.
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