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
LINCOLN
Reported code forms U2101
Some 2016 MKC, MKX and MKZ vehicles built on or before 11/28/2015 and equipped with a TCU may exhibit an intermittent battery draw that can be isolated to the TCU, an inoperative MyLincoln Mobile app, a MyLincoln Mobile…
FORD, LINCOLN
Reported code forms U2101
Some 2017-2018 Fusion/MKZ vehicles built on or before 27-Oct-2017 may exhibit an illuminated airbag lamp and/or SYNC 911 assist not operational message being displayed. Connect the IDS and check the RCM and APIM for…
FORD, LINCOLN
Reported code forms U2101
SOME 2017 FUSION/MKZ VEHICLES BUILT ON OR BEFORE 18-AUG-2016 MAY EXHIBIT AN AIR BAG LAMP. CONNECT THE IDS AND CHECK THE RCM FOR DTCS. IF DTC U3000, U2100, U2101, U2300, U0455, U0452, B0080, B141B, B141C, B0054, B140C,…
LINCOLN
Reported code forms U2101
2016 MKZ,MKC AND MKX: MY LINCOLN MOBILE APP NOT ABLE TO CONNECT TO VEHICLES EQUIPPED WITH DTC U2100 AND/OR U2101 ON VEHICLES WITH TELEMATICS CONTROL UNIT *CN
Check vehicle applicability
3A 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.