Zoeken
U0170
Systeem
Network (CAN Bus)
Scanner vereist
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.

Veelvoorkomende symptomen

  • Airbag light on
  • B-codes may accompany

Typische oorzaken

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

Welke scanner heb je nodig?

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

Gebruik live data en freeze frame voordat je onderdelen vervangt. ABS-, SRS- en U-codes vereisen meestal een full-system scanner.

Diagnosetips

  • Leg freeze frame vast wanneer de code voor het eerst verschijnt
  • Wis de code pas na het oplossen van de oorzaak
  • Controleer op gerelateerde pending codes
  • Controleer of accuspanning boven 12,4 V is voordat je sensoren suspecteert

Aanbevolen TOPDON scanners

Veelgestelde vragen

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.