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U0123
System
Network (CAN Bus)
Scanner som krävs
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.

Vanliga symptom

  • ESC light on
  • C0462 may accompany

Typiska orsaker

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

Vilken scanner behöver du?

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

Använd live-data och freeze frame innan du byter delar. ABS-, SRS- och U-koder kräver oftast en fullsystems-scanner.

Diagnostiktips

  • Spara freeze frame när koden först sätts
  • Rensa koden först efter att orsaken är åtgärdad
  • Kontrollera relaterade väntande koder
  • Verifiera batterispänning över 12,4 V innan du misstänker sensorer

Rekommenderade TOPDON-scannrar

Vanliga frågor

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.