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U0123
Sistema
Network (CAN Bus)
Scanner richiesto
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Lost Communication with Yaw Rate Sensor Module

Understand U0123, common causes, and the right TOPDON scanner to diagnose it.

Yaw rate sensor module offline — stability control cannot measure vehicle rotation.

Sintomi comuni

  • ESC light on
  • C0462 may accompany

Cause tipiche

  • Failed yaw sensor (often in airbag module)
  • CAN wiring
  • Sensor not calibrated after replacement

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 U0123 mean?
U0123 indicates lost communication with yaw rate sensor module. Yaw rate sensor module offline — stability control cannot measure vehicle rotation.
Can I diagnose U0123 with a basic code reader?
U0123 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 U0123?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with U0123?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.