Ford Mustang Mach E won't shift problems

Filed Oct 9, 2026 · Electrical, Fuel system · MD

While driving my 2024 Ford Mustang Mach-E GT in mild 49°F weather with a 95% battery state of charge, the vehicle suddenly displayed a 'Performance reduced to lower temperature' message on the dashboard. The vehicle entered a protective 'limp mode,' abruptly and unexpectedly reducing available motor power while actively driving in traffic. This sudden loss of propulsion created a hazardous driving condition. No secondary warning icons or wrench lights appeared. Contacted the Ford dealership, but they refused immediate diagnostic service due to technician availability. This code appeared on 9/15/26 dealership failed to return my call.

Filed Nov 24, 2025 · Electrical, Engine · CA

After stopping the vehicle to run an errand, the vehicle locked up. The steering wheel would not turn. The vehicle would not shift into any gear. The vehicle was inoperable and I found myself stranded 25 miles from home. The vehicle was towed to our local Ford dealership where it has been for the past two weeks. This failure could just as occurred on the road causing a dangerous situation.

Filed Apr 18, 2025 · Electrical · MA

The HVBJB failed on my 2024 Ford Mustang Mach-e. I first noticed a dashboard warning regarding a powertrain malfunction when I tried to start the car about a half-hour after we returned home from an approximately 170-mile drive five days ago. The warning said it was a powertrain malfunction and to get service soon. The car started an hour later and I was able to drive it to the Ford Service center where I bought the new car only last June. There they diagnosed the problem with this language: "HV JUNCTION BOX - FOUND P0AA1:68 AND P0AA1:00 TO BE HARD SET AND THE TO BE IN LIMP MODE. NEED TO REPLACE HV JUNCTION BOX ( 414-03A PPT P4 ) AND RETEST ALL MODULES. WILL NEED MORE TIME AFTER REPAIR TO TEST ALL SYSTEM. MEY NEED TO TAKE APART HV BATTERY AGIAN..." The service people told me that they need to keep the car for two weeks to replace the part and conduct follow-up tests. I know that the failed component has been the subject of two past recalls (2022, 2023) of the 2020-2022 model years for the Mach-e. The first recall resulted in Ford's attempt at a software fix, while the second required replacing the HVBJB in cars in which the software fix proved insufficient, presumably because the part had already been damaged before the fix and later failed under heat stress. Based on my experience this week it seems clear that neither recall resulted in Ford fixing the underlying problem with the part. Importantly, Ford says the part is subject to failure from overheating when drivers too often use high speed chargers (DC) or too often employ maximum acceleration. This admission contradicts Ford's own marketing of the car, which emphasizes its sportiness and fast acceleration, and its compatibility (with an adapter) with Tesla's large national network of superchargers. So the nature of the failing part is apparently wholly incompatible with what attracts many buyers to the car. Can the federal safety agency require Ford to make the necessary engineering fix to the part?

Filed Apr 1, 2025 · Electrical, Fuel system · WI

What component or system failed or malfunctioned, and is it available for inspection upon request? The high-voltage battery system and powertrain system both failed. The vehicle went into limp mode, showing alerts for “Powertrain Malfunction / Reduced Power” and a “High-Voltage Battery Warning.” The vehicle is available for inspection if requested. How was your safety or the safety of others put at risk? The incident occurred while driving on the freeway at 75–77 mph, which significantly increased the risk of a crash. The sudden loss of power in heavy traffic was dangerous and could have led to a collision. Has the problem been reproduced or confirmed by a dealer or independent service center? Not yet. The issue has been documented through the Ford app and in-vehicle warning messages, and I am in the process of waiting for a diagnostic to be completed by the dealer. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Waiting for dealer to look at it. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Yes, immediately before and during the failure, the vehicle and the Ford app displayed messages indicating a powertrain malfunction/reduced power, along with a high-voltage battery warning alert. Additional description: While driving on the freeway at approximately 75–77 mph, the vehicle suddenly entered limp mode with a dramatic reduction in speed and power. Warning lights for a powertrain malfunction and high-voltage battery appeared. This created an unsafe situation in high-speed traffic. The vehicle had approximately 1,459 miles at the time of the incident. This also happened on my 2022 ford mustang Mach E 8 other times. VIN: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 27, 2024 · Driver assistance, Electrical · IN

While driving the vehicle came to an abrupt stop in the middle of traffic. The vehicle had to be changed to a tow mode as it was stuck in park. The vehicle had not been driven more than 3days at this point. The vehicle was towed to a nearby dealer who found no issue and gave the vehicle back with errors still in the dash. The vehicle was then brought to a second dealer who found no issues after 5days of inspection. They advised all codes see cleared by the previous dealer. Vehicle then stopped again in the middle of traffic with no warning and was towed again. This was he 3rd attempt at accessing the issue on a 2week old purchase of which I had driven at most 1week. The vehicle abruptly stops while driving, displays a battery icon, a car icon with and exclamation, and a turtle icon. To which it has each time this has happened and the dealer seems to find no issue with this and sends me out to drive in safely again.

Filed Nov 1, 2023 · Electrical · IL

The HVJB failed once again, disabling my car. This is the second HVJB I’ve had since purchasing the car April 18,2022. The car goes into a limp mode making it unsafe for highway use.

Filed Sep 29, 2023 · Electrical, Fuel system · OR

We came out to our parked car and got a message that said Stop Safely Now. The vehicle would not shift into gear. The dealership had confirmed that the high voltage junction box has failed. We did not get the Service Vehicle Soon warning prior to the failure, despite having had the recall software update applied. The first sign of failure was a loss of motive power. This is a safety issue because loss of motive power while driving can result in loss of control of the vehicle. The loss of heating and cooling combined with the loss of motive power is also a significant safety risk if the failure occurs in a remote location experiencing extreme temperatures. The part has yet to be replaced, but I’m sure Ford will be retaining it for inspection.

Filed Aug 21, 2023 · Electrical, Engine · TN

I bought a 2022 mustang Mach e. Which was supposedly fixed at the factory in regards to the HVBJB issue. However, in mid 2023, my vehicle suffered a limp mode/warning about reduced power while on the interstate, was limited to about 60mph with very poor acceleration. Was diagnosed by ford tech as a failure of the recalled part and required HVBJB and BECM replacement, similar to 22V‑412 recall. I think this should be added to RQ23004 investigation, as these vehicles had both the new hardware and software and were supposed to be “fixed”.

Filed Aug 21, 2023 · Electrical, Transmission · MN

2 days after ownership the vehicle shutdown and went into limp mode with a picture of a turtle and battery icon in middle of road with traffic, apple valley ford replaced the 12v battery and that solved the issue, today 3 days later same issue! Stuck in the road, ev battery charged to 90%

Filed May 13, 2022 · Fuel system · MI

I received a “Stop Safely Now” message upon returning to my vehicle at the end of a work day. The vehicle would not shift into drive, but accessory power did work. It was late at night and in a hospital parking structure, I was forced to leave the vehicle there overnight. After some unsuccessful troubleshooting the next day, I had to call a tow truck and have the vehicle brought to a dealer for repair. It was diagnosed with a faulty BECM (Battery Energy Control Module). After repair, I have not yet seen a repeat occurred the issue.