U0100Krytyczny
Utrata komunikacji z ECM (sterownik silnika)
Komunikacja sieciowa
Sprawdź szczegóły →U0101
WysokiLost Communication with TCM (Transmission Control Module)
OBD-II (EN): Lost Communication With TCM
Code U0101 — Lost Communication with TCM (Transmission Control Module). Symptoms: transmission fail-safe mode. Possible cause: CAN bus fault at TCM. Professional diagnosis recommended.
Symptoms
Transmission fail-safe mode, no communication with TCM
Possible causes
CAN bus fault at TCM, faulty TCM, TCM power loss
Affected systems
Skrzynia biegówMagistrala CAN
Related codes
U0001Krytyczny
Magistrala CAN High Speed — brak komunikacji
Komunikacja sieciowa
Sprawdź szczegóły →Tags and synonyms
Does code U0101 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.