Error code

OBD2 U0123

OBD2U0123
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Lost Communication With Yaw Rate Sensor Module.

Severity

moderateCan drive but may experience reduced functionality of ABS, traction control, and stability control systems.

Summary

U0123 indicates a loss of communication with the yaw rate sensor module, which affects systems like ABS, traction control, and stability control.

Symptoms

  • ABS warning light illuminated
  • Traction control and stability control systems may be deactivated

Common Causes

  • Loss of ground connections
  • Open circuits in CAN bus system to the yaw rate sensor/module
  • Defective yaw rate sensor/module
  • Damaged, burnt, shorted, or corroded wiring and/or connectors

Diagnosis

  1. Check fuses for signs of arcing or overheating
  2. Inspect ground connections on the vehicle frame
  3. Visually inspect wiring harnesses for damage
  4. Perform reference voltage, ground, continuity, and resistance checks

Fixes

  • Replace faulty yaw rate sensor/module if necessary

FAQ

Can I drive with U0123?

Yes, but you may experience reduced functionality of ABS, traction control, and stability control systems.

What should I do if the code persists after checking grounds and wiring?

Consult a professional mechanic to perform further diagnostic tests or replace faulty components.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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