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U0073

Control module - data bus Off

U0073 is described as “Control module - data bus Off” in the Generic OBD2 reference. Other reference families are shown below; select the scope relevant to your vehicle.

Manufacturer reference family

BMW: U0073

en

Control Module Communication Bus Off

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
Manufacturer reference family

Changan: U0073

en

CAN bus-off fault

ru

TCU. Ошибка CAN-шины.

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

2 more related profiles are listed in the vehicle directory.

Manufacturer reference family

GM: U0073

en

Control Module Communication Bus A Off Short to Battery; Control Module Communication Bus A Off Short to Ground; Control Module Communication Bus A Off Open; ECU HS Bus Off; ECU LS Bus Off

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.

Manufacturer reference family

Euler / Great Wall / Harvard / Haval: U0073

en

CAN bus is disabled due to multiple data reception/transmission errors

ru

CAN-шина отключена из-за многочисленных ошибок приёма-передачи данных

Reference namespace
haval
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: Great Wall, Euler, Haval, Harvard.

34 profiles assigned this reference family

10 more related profiles are listed in the vehicle directory.

Manufacturer reference family

Acura / Honda: U0073

en

FCAN Malfunction (Bus-off)

Reference namespace
honda
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: Honda, Acura.

12 profiles assigned this reference family
Manufacturer reference family

Mercedes-Benz: U0073

en

Control Module Communications Bus Off

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
Generic OBD2

Generic OBD2: U0073

en

Control module - data bus Off

Reference namespace
obd2
Source revision
legacy-2.2.20

Generic OBD2 definition; confirm the protocol and vehicle-specific service information.

Manufacturer reference family

Belgee / Geely / Proton: U0073

en

CAN Diagnosis - Buss Off

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 recording
Source and applicability

OBD 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

OBD Lens reference library · catalog legacy-owner-2026-10-09-v81. Sources and scope