OBD LensBMW: U0100
Lost Communication With ECM/PCM "A"
- Reference namespace
- bmw
- Source revision
- legacy-oem-dtc-r2-20260924
Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.
Related catalog brands: BMW.
10 profiles assigned this reference family
Changan: U0100
ESM CAN signal fault (data loss)
TCU. Ошибка сигнала CAN-шины от ESM - потеря данных.
- Reference namespace
- changan
- Source revision
- legacy-oem-dtc-r2-20260924
Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.
Related catalog brands: Changan.
26 profiles assigned this reference family
- OBD-II / EOBDChangan
- Alsvin Gen.3 (2017-n.d.)Changan · 2017–onward
- CS35Changan
- CS35 PlusChangan
- CS35 Plus New (1.4T)Changan
- CS55 Plus (2017-) 1.5 + ATChangan · 2017–onward
- CS55 Plus (2017-) 1.5 + DCTChangan · 2017–onward
- CS55 Plus II (2021-)Changan · 2021–onward
- CS75Changan
- CS75 FL (1.8+AT)Changan
- CS75 FL (1.8+DCT)Changan
- CS75 Plus 1.5Changan
- CS75 Plus 2.0Changan
- CS95 (2.0+AT)Changan
- EADO Plus 2022- (1.4T)Changan · 2022–2022
- G318Changan
- S05Changan
- S07Changan
- UNI-K (1.5/2.0+AT)Changan
- UNI-K (1.5/2.0+DCT)Changan
- UNI-S (1.5+DCT)Changan
- UNI-T (1.5+DCT)Changan
- UNI-T (2.0+AT)Changan
- UNI-V (1.5+DCT)Changan
2 more related profiles are listed in the vehicle directory.
GM: U0100
Lost Communication With Engine Control Module Invalid Data; Lost Communication With Engine Control Module Message Counter Incorrect; Lost Communication With Engine Control Module Bus Signal Checksum Error
- Reference namespace
- gm
- Source revision
- legacy-oem-dtc-r2-20260924
Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.
Genesis / Hyundai / Kia: U0100
Сбой связи с ЭБУД/PCM «А» (C-CAN)
- Reference namespace
- hyundai-kia
- Source revision
- legacy-oem-dtc-r2-20260924
Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.
Related catalog brands: Kia, Genesis, Hyundai.
401 profiles assigned this reference family
- OBD-II / EOBDHyundai
- OBD-II / EOBDGenesis
- Accent III / Verna MC 1.5 CRDI DieselHyundai
- Accent III MC / Verna 1.4/1.6 MPIHyundai
- Accent IV (RB/RC) / Verna / i25 / Excel III / Grand Pony 2010-2017 1.4/1.6 MPIHyundai · 2010–2017
- Accent IV RB 1.4/1.6 GDIHyundai
- Accent IV RB 1.6 CRDIHyundai
- Accent V / Verna HC 1.5 CRDI DieselHyundai
- Accent V / Verna HC 1.6 CRDI Diesel (2018-2022)Hyundai · 2018–2022
- Cadenza VG / K7 (2010-2016) 2.4 GDIKia · 2010–2016
- Cadenza VG / K7 (2011-2016) 2.7Kia · 2011–2016
- Cadenza VG / K7 (2011-2018) 3.0Kia · 2011–2018
- Cadenza VG / K7 (2011-2018) 3.0 LPIKia · 2011–2018
- Carens KY 1.5 CRDI Diesel (2021-n.d.)Kia · 2021–onward
- Carens/Rondo 2 UN (2006-2012) 2.0/2.4 MPI CANKia · 2006–2012
- Carens/Rondo 3 RP (2012-2021)Kia · 2012–2021
- Carens/Rondo 3 RP (2012-2021) 1.6 GDIKia · 2012–2021
- Carens/Rondo 3 RP (2013-2014) 1.7 CRDI Diesel TCIKia · 2013–2014
- Carens/Rondo 3 RP (2015-2021) 1.7 CRDI Diesel TCI-U2Kia · 2015–2021
- Carnival KA4 1.6 T-GDI HEV (2020-)Kia · 2020–onward
- Carnival KA4 2.2 CRDI Diesel (2020-)Kia · 2020–onward
- Carnival KA4 PE 2.0 T-GDI (2020-)Kia · 2020–onward
- Carnival KA4 PE 3.5 (2020-)Kia · 2020–onward
- Carnival/Sedona VQ-2 2.7 V6 (2006-2014)Kia · 2006–2014
377 more related profiles are listed in the vehicle directory.
Mercedes-Benz: U0100
Lost Communication with ECM/PCM A
- Reference namespace
- mercedes-benz
- Source revision
- legacy-oem-dtc-r2-20260924
Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.
Related catalog brands: Mercedes-Benz.
13 profiles assigned this reference family
- E250 BlueTEC Diesel 2014-Mercedes-Benz · 2014–onward
- E350 DieselMercedes-Benz
- EQA / EQB / G-Class G580 EQMercedes-Benz
- EQC / EQVMercedes-Benz
- GLK 220 CDIMercedes-Benz
- GLK 350 3.5L, ML 350 GasolineMercedes-Benz
- OBD-II / EOBD + AT (CAN)Mercedes-Benz
- Sprinter 2011- 3.0 DieselMercedes-Benz · 2011–2011
- Sprinter II (2006-), NCV3Mercedes-Benz · 2006–onward
- W164 ML300 CDI 3LMercedes-Benz
- W168Mercedes-Benz
- W203 CDIMercedes-Benz
- W204 DieselMercedes-Benz
Generic OBD2: U0100
Data bus, engine control module (ECM) A - no communication
- Reference namespace
- obd2
- Source revision
- legacy-2.2.20
Generic OBD2 definition; confirm the protocol and vehicle-specific service information.
Belgee / Geely / Proton: U0100
CAN Diagnosis - Lost Communication with ECU; CAN EMS ECU communication failed
- Reference namespace
- proton
- Source revision
- legacy-oem-dtc-r2-20260924
Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.
Related catalog brands: Belgee, Geely, Proton.
5 profiles assigned this reference family
What should I check before using this definition?
Keep the full code, module, status and freeze-frame data. Confirm the vehicle’s make, model, year and current manufacturer service information before choosing a repair. This entry does not identify a failed part by itself.
Organize a scan report or recordingOBD Lens production library legacy-owner-2026-10-09-v81. This is a scoped technical reference, not a scan of your car. A catalog relationship does not certify that every ECU, year or engine returns the same signal or code definition.
Read the reference method