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U0170
Sistema
Network (CAN Bus)
Scanner richiesto
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with Restraints System Module

Understand U0170, common causes, and the right TOPDON scanner to diagnose it.

Airbag/SRS module not communicating — overlaps with U0151 on some vehicles.

Sintomi comuni

  • Airbag light on
  • B-codes may accompany

Cause tipiche

  • Failed SDM/airbag module
  • CAN wiring
  • Low voltage
  • Prior deployment event

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 U0170 mean?
U0170 indicates lost communication with restraints system module. Airbag/SRS module not communicating — overlaps with U0151 on some vehicles.
Can I diagnose U0170 with a basic code reader?
U0170 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 U0170?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with U0170?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.