Szukaj
U0164
System
Network (CAN Bus)
Wymagany skaner
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with HVAC Control Module B

Understand U0164, common causes, and the right TOPDON scanner to diagnose it.

Secondary HVAC module offline on dual-zone or rear climate systems.

Typowe objawy

  • Rear climate inop
  • Temperature sync issues

Typowe przyczyny

  • Rear HVAC module fault
  • CAN wiring in console
  • Low voltage

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 U0164 mean?
U0164 indicates lost communication with hvac control module b. Secondary HVAC module offline on dual-zone or rear climate systems.
Can I diagnose U0164 with a basic code reader?
U0164 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 U0164?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with U0164?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.