U2100
0 owner reports and 272 manufacturer filings across 84 model years from Ford, Lincoln.
Where U2100 shows up
Source: NHTSA manufacturer communications and complaintsShowing the 60 model years where U2100 appears most; it is on file for 84 in total.
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
What it gets filed under
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names U2100. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.
- SSM 549922026-07-08 · Unknown Or Other
- Some 2024-2026 Bronco vehicles may exhibit various TRM concerns when attempting first time installation of a dealer installed accessory TRM, including one or more of the following: TRM unable to be programmed -Trailer lights inoperative -DTC U2100 stored in the TRM. This may be due to any of the following conditions:-The incorrect trailer tow kit is being installed. The TRM is model year specifi
- SSM 549402026-06-16 · Service Brakes
- Some 2021-2026 F-150 vehicles may exhibit a U2100:00 diagnostic trouble code (DTC) for initial configuration incomplete stored in the trailer control module (TRM). This may be due to the vehicle having a Ford accessory trailer brake kit installed without being programmed following the included instructions. If the vehicle was built with minor feature code FDDAA and a trailer brake gain switch is p
- SSM 543602025-11-07 · Unknown Or Other
- 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 programming the audio digital signal processing module (DSP):<br /><br /> * "Procedure Unsuccessful - ReadDTCs DTCs present: U2101 (Control Module Configuration Incompatible)"<br /> * "Proce
- SSM 540522025-07-15 · Steering
- 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 not complete PMI and may store diagnostic trouble codes (DTC) U2100 and/or U2101 in the SCCM. This may be due to a concern with the compatibility of the software with a hardware ch
- SSM 536882025-04-30 · Unknown Or Other
- Some 2024-2025 Aviator vehicles equipped with air suspension may exhibit a drive malfunction and/or suspension fault message in the instrument panel cluster (IPC) with diagnostic trouble codes (DTCs) B1041 and U2100 stored in the suspension control module A (SUMA). This may be due to the SUMA entering diagnostic service mode following suspension system diagnosis or repair. Clear DTCs using FDRS >
- SSM 535692025-04-04 · Unknown Or Other
- Some 2021-2025 Ford and Lincoln vehicles may exhibit diagnostic trouble code (DTCs) U2100 and/or U3002 stored in the cruise control module (CCM), side obstacle detection control module LH (SODL), side obstacle detection control module RH (SODR), side obstacle detection control module C (SODCMC) and/or side obstacle detection control module D (SODCMD) after a module replacement.
What U2100 means
Source: SAE J2012 / OBD-IIU2100 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about U2100
Source: NHTSA files and the OBD-II standardCan I keep driving with U2100 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light generally means the fault was logged and the vehicle is in a reduced-risk mode; a flashing light means stop soon, because a misfiring engine can destroy a catalytic converter in minutes. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.