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Service bulletins for the 2021 Ford Mustang Mach-E

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

329 on file from NHTSA, as of 2026-10-19.

About U0100 on the 2021 Ford Mustang Mach-E: what the code means, and the bulletins and recalls about the same components.

By type

By component

By trouble code

Only bulletins with trouble code: U0100 are shown. Show all

Bulletins, newest first
SSM 545742026-02-17. Service bulletin. SERVICE BRAKES. Some 2021-2022 Mustang Mach-E vehicles may exhibit a "Parking Brake Failure, Service Immediately message displayed in the instrument panel cluster (IPC) and diagnostic trouble codes (DTCs) C2007, C2008, C1034, U0293 and/or U0100 stored in the anti-lock brake system (ABS) module. To correct the condition, follow the technical instructions outlined FSA 22P31 (US) or 22B47 (Canada) for an appropriate repair direction.
TSB 25-20712025-03-18. Service bulletin. UNKNOWN OR OTHER. This article supersedes TSB 21-2405 to update the production fix date. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: * Illuminated powertrain malfunction indicator (wrench) lamp and/or "Shift System Fault" message * DTC U0103:87 stored in the secondary on board diagnostic module (SOBDMC) Some vehicles may also exhibit DTCs U0100:00, U0121, U0140, and/or U0155 stored in the gear shift module (GSM). This may be due to the software in the GSM. *****Model section: built on or before 30-Sep-2021
TSB 22-21432022-04-26. Service bulletin. SERVICE BRAKES, HYDRAULIC; EQUIPMENT; PARKING BRAKE. Some 2021-2022 Mustang Mach-E vehicles built on or before 15-Mar-2022 may exhibit a Parking Brake Fault Service Now message in the instrument panel cluster (IPC) and DTCs C2007, C2008, C1034, U0293 and/or U0100 in the antilock brake system (ABS) module. This may be due to an open/corroded circuit near the rear caliper. To correct the condition, follow the Service Procedure to replace the electronic parking brake (EPB) connector.
TSB 21-24052021-12-01. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Some 2021 Mustang Mach-E vehicles built on or before 09-Sep-2021 may exhibit an illuminated powertrain malfunction indicator (wrench) lamp and/or display the message Shift System Fault Service required with DTC U0103:87 stored in the secondary on board diagnostic module (SOBDMC). Some vehicles may also exhibit DTCs U0100:00, U0121, U0140, and/or U0155 stored in the gear shift module (GSM). This may be due to the software in the GSM. To correct the condition, follow the Service Procedure to reprogram the GSM.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.