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 wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
U2101Control Module Configuration IncompatibleManufacturer communications
16Original wording in English
LINCOLN
Reported code forms U2101
Some 2025 Aviator vehicles equipped with 28 radio speakers (minor feature code IDBBN) may have previously exhibited at least one of the following error messages in Ford Diagnosis and Repair System (FDRS) while…
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-150 vehicles equipped with a 3.5L PowerBoost engine may exhibit an illuminated stability-traction control indicator with diagnostic trouble codes (DTCs) U2017:57 and U2101:00 in the ABS module. This may…
FORD
Reported code forms U2101
Some 2023 Bronco vehicles may exhibit diagnostic trouble code (DTC) U2101 stored in accessory protocol interface module (APIM) and/or telematics control unit (TCU) after TCU module programming with no additional…
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…
Check vehicle applicability
74A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ford | BRONCO | 2023 |
| Ford | BRONCO SPORT | 2021 |
| Ford | ECOSPORT | 2021 |
| Ford | ECOSPORT | 2020 |
| Ford | ECOSPORT | 2019 |
| Ford | ECOSPORT | 2018 |
| Ford | ESCAPE | 2021 |
| Ford | ESCAPE | 2020 |
| Ford | EXPEDITION | 2021 |
| Ford | EXPEDITION | 2020 |
| Ford | EXPEDITION | 2019 |
| Ford | EXPEDITION | 2018 |
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.