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U0123
System
Network (CAN Bus)
Benötigter Scanner
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.

Häufige Symptome

  • ESC light on
  • C0462 may accompany

Typische Ursachen

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

Welchen Scanner brauchen Sie?

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

Nutzen Sie Live-Daten und Freeze Frame, bevor Sie Teile tauschen. ABS-, SRS- und U-Codes erfordern meist einen Vollsystem-Scanner.

Diagnose-Tipps

  • Freeze Frame erfassen, wenn der Code erstmals gesetzt wird
  • Code erst nach Behebung der Ursache löschen
  • Auf verwandte pending codes prüfen
  • Batteriespannung über 12,4 V prüfen, bevor Sie Sensoren verdächtigen

Empfohlene TOPDON Scanner

Häufig gestellte Fragen

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.