Szukaj
U0122
System
Network (CAN Bus)
Wymagany skaner
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with Vehicle Dynamics Control Module

Understand U0122, common causes, and the right TOPDON scanner to diagnose it.

Stability/yaw control module offline — ESC and ABS may be disabled.

Typowe objawy

  • ESC off light
  • ABS light
  • Handling warning

Typowe przyczyny

  • VDC module fault
  • Wheel speed sensor cascade
  • CAN bus off

Jakiego skanera potrzebujesz?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

Użyj danych na żywo i freeze frame przed wymianą części. Kody ABS, SRS i U zwykle wymagają skanera full-system.

Wskazówki diagnostyczne

  • Zapisz freeze frame, gdy pojawi się kod
  • Kasuj kod dopiero po usunięciu przyczyny
  • Sprawdź powiązane kody pending
  • Sprawdź, czy napięcie akumulatora jest powyżej 12,4 V przed podejrzeniem czujników

Polecane skanery TOPDON

Często zadawane pytania

What does U0122 mean?
U0122 indicates lost communication with vehicle dynamics control module. Stability/yaw control module offline — ESC and ABS may be disabled.
Can I diagnose U0122 with a basic code reader?
U0122 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Which TOPDON scanner do I need for U0122?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with U0122?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.