U0140Średni
Utrata komunikacji z BCM (moduł nadwozia)
Komunikacja sieciowa
Sprawdź szczegóły →B0355
ŚredniCode B0355 means a low signal level in the temperature door circuit (#26) or a Body Control Module (BCM) communication error. The fault concerns the air conditioning system and body electronics.
OBD-II (EN): Temperature Flap Circuit Low Signal or BCM Communication Error
Code B0355 indicates a problem with the temperature door circuit in the air conditioning system or a Body Control Module (BCM) communication error. The fault can cause incorrect cabin temperature regulation and the HVAC system entering fail-safe mode. Computer diagnostics at a workshop are recommended, as the cause may lie in both the electronics and the mechanics of the airflow system.
Symptoms
Incorrect temperature regulation in the passenger cabin; vents only work at one temperature or do not respond to setting changes; the A/C or CHECK ENGINE light may illuminate; the HVAC system enters fail-safe mode; disruptions in the operation of other body electronics functions may occur.
Possible causes
• Damaged or broken wires in the blend door / temperature door circuit • Faulty temperature door servo motor • BCM communication error with other controllers via the CAN bus • Corrosion or loose connectors in the HVAC wiring harness • Faulty A/C switch / climate control panel (especially in GM/Chevrolet vehicles: mode selection switch #9 – Blend #2/Defog/Floor)
Affected systems
HVAC / KlimatyzacjaBCM (Body Control Module)Elektronika nadwoziaPanel sterowania klimatyzacjąMagistrala CAN
Related codes
B0360Średni
B0360 – Niski sygnał w obwodzie przełącznika wyboru trybu klimatyzacji (przełącznik 10). Oznacza problem z modułem sterowania HVAC.
Nadwozie
Sprawdź szczegóły →Suggested Hybspec services
Based on the systems affected by this code, we will most likely start with:
Sources and further reading
Does code B0355 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.