U0140Średni
Utrata komunikacji z BCM (moduł nadwozia)
Komunikacja sieciowa
Sprawdź szczegóły →B1050
WysokiCode B1050 indicates a communication interruption on the B-CAN bus (Bus Off) – loss of signal transmission between body modules. In some vehicles, it may also indicate a short circuit in the passenger impact sensor circuit.
Code B1050 is a diagnostic trouble code for the body, most often signaling a communication interruption on the B-CAN bus (Bus Off). This can cause failure of many systems such as lighting, windows, or airbags. In some vehicles, this code also indicates a short circuit in the passenger impact sensor circuit.
Symptoms
Illumination of the 'Check Engine' or 'Service Soon' warning light, failure of multiple body systems (e.g., lighting, windows, central locking), loss of communication with body modules, possible airbag deactivation, U-code communication errors in memory.
Possible causes
Short circuit in the CAN B bus wiring Faulty Body Control Module (BCM) Corrosion or damage to bus connectors Damage to another module on the B-CAN line (e.g., door module, airbag module) Open circuit in B-CAN bus wires
Affected systems
Magistrala B-CANModuł sterowania nadwozia (BCM)Poduszki powietrzneSystemy komfortu (szyby, zamki)Czujnik uderzenia pasażera
Related codes
U0100Krytyczny
Utrata komunikacji z ECM (sterownik silnika)
Komunikacja sieciowa
Sprawdź szczegóły →Does code B1050 require professional diagnostics?
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.