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U0144
Sistema
Network (CAN Bus)
Scanner richiesto
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with Gateway Module A

Understand U0144, common causes, and the right TOPDON scanner to diagnose it.

Primary gateway module offline — routes between vehicle CAN buses.

Sintomi comuni

  • Many modules offline at once
  • No-start on some platforms

Cause tipiche

  • Failed gateway
  • CAN-H/L damage
  • Aftermarket alarm splice

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 U0144 mean?
U0144 indicates lost communication with gateway module a. Primary gateway module offline — routes between vehicle CAN buses.
Can I diagnose U0144 with a basic code reader?
U0144 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 U0144?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with U0144?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.