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U0104
Sistema
Network (CAN Bus)
Scanner richiesto
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with Cruise Control Module

Understand U0104, common causes, and the right TOPDON scanner to diagnose it.

Adaptive or conventional cruise control module offline.

Sintomi comuni

  • Cruise inoperative
  • ACC warning
  • Check engine or other lights

Cause tipiche

  • Failed cruise module
  • CAN wiring
  • Radar sensor fault on ACC systems
  • Low voltage

Di quale scanner hai bisogno?

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

Usa dati live e freeze frame prima di sostituire componenti. I codici ABS, SRS e U richiedono di solito uno scanner full-system.

Consigli diagnostici

  • Registra il freeze frame quando compare il codice
  • Cancella il codice solo dopo aver risolto la causa
  • Controlla codici pending correlati
  • Verifica che la batteria sia sopra 12,4 V prima di sospettare i sensori

Scanner TOPDON consigliati

Domande frequenti

What does U0104 mean?
U0104 indicates lost communication with cruise control module. Adaptive or conventional cruise control module offline.
Can I diagnose U0104 with a basic code reader?
U0104 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 U0104?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with U0104?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.