What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
4Original wording in English
FORD
Reported code forms U2101
Some 2023-2025 F-Super Duty vehicles may display an error during replacement of the SCCM that contains the following message: "Reprogramming has failed, would you like to retry?". If this error is present, the SCCM will…
FORD
Reported code forms U2101:00
Some 2023 F-Super Duty vehicles equipped with SYNC 4 may experience programming errors after a replacement of the body control module (BCM) for various concerns. After programmable module installation (PMI) of the new…
FORD
Reported code forms U2101:00
Some 2023 F-Super Duty vehicles equipped with SYNC 4 may require a replacement of the body control module (BCM) for various concerns. After programmable module installation (PMI) of the new BCM, diagnostic trouble codes…
FORD, LINCOLN
Reported code forms U2101
For 2018-2021 EcoSport/Expedition/Navigator, 2019-2021 Ranger/Transit Connect, 2020-2021 Escape/Explorer/SuperDuty/Transit/Aviator/Corsair, 2021 Bronco Sport/F-150/Mustang/Mach-E the Workshop Manual (WSM) diagnostics…
Check vehicle applicability
5A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.