U0140Średni
Utrata komunikacji z BCM (moduł nadwozia)
Komunikacja sieciowa
Sprawdź szczegóły →B1105
ŚredniThe door multiplex control module has lost communication with the MICU (door switch message). B-CAN network error prevents data frame reception.
OBD-II (EN): Loss of Communication with MICU (Door Switch Message) via B-CAN
Code B1105 means loss of communication between the door control module and the central MICU unit via the B-CAN bus. This can cause incorrect operation of locks, windows, or other door functions. Diagnosis of the CAN wiring and modules by an authorized service center with an appropriate scanner is recommended.
Symptoms
Incorrect operation of central locking or power windows; no response to door switches; possible deactivation of interior lighting controlled by the door; error message in the vehicle diagnostic system.
Possible causes
• Faulty Door Multiplex Control Unit • Open circuit or short circuit in the B-CAN bus wires • Corrosion or loose connection of the module or MICU connector • Fault in the MICU (Multi-purpose Integrated Control Unit) • Voltage supply disturbances to the door module
Affected systems
Body CAN (B-CAN)Moduł sterowania multipleksem drzwiMICU – Multi-purpose Integrated Control UnitZamki centralneSzyby elektryczneOświetlenie wnętrza
Related codes
B1100Wysoki
Usterka jednostki sterującej multiplekserem drzwi lub zespołu czujnika poduszki powietrznej. Kod producenta wskazujący na nieprawidłowe działanie systemu karoserii.
Nadwozie
Sprawdź szczegóły →U0155Średni
Utrata komunikacji z modułem wspomagania (EPS)
Komunikacja sieciowa
Sprawdź szczegóły →Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Does code B1105 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.