Utrata komunikacji z TCM (sterownik skrzyni)
U0280
WysokiLost Communication with Control Module (CAN Network) – No communication with vehicle network node. Network diagnostic code regarding interruption of data exchange between controllers.
OBD-II (EN): Lost Communication with Vehicle Control Module (CAN)
Code U0280 indicates a problem with communication in the vehicle's CAN network – controllers cannot exchange data, which may cause power seats, HVAC, and other comfort systems to stop working. The most common causes are a damaged communication harness, corroded connectors, or a faulty controller. Due to the complexity of CAN network diagnostics, a visit to a workshop with a professional diagnostic scanner is recommended.
Symptoms
No operation of power seat adjustment; inactive HVAC system; CHECK ENGINE light or network icon on the dashboard; possible limitation of vehicle comfort functions; other related modules may report communication errors
Possible causes
• Damaged or broken CAN bus (data bus High/Low) • Corrosion or loose connectors in the communication harness • Faulty network node controller (e.g., BCM, seat module) • Short circuit in CAN bus wires to ground or power • Faulty or discharged power supply for controllers (lack of 12V / ground)
Affected systems
Related codes
Utrata komunikacji z BCM (moduł nadwozia)
Utrata komunikacji z modułem wspomagania (EPS)
Moduł sterowania nadwoziem (BCM) — usterka wewnętrzna
Niezgodność oprogramowania wewnętrznego modułu sterującego. Kod wskazuje na konflikt wersji oprogramowania między modułami ECU w sieci CAN pojazdu.
Utrata komunikacji z ECM (sterownik silnika)
Code U0280 appears in these brands
Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.
Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Does code U0280 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.
