U0123
NetworkModule Communicationmoderate severityLost Communication with Yaw Rate Sensor Module
What U0123 Means
Cannot communicate specifically with the yaw rate sensor that measures vehicle rotation.
Symptoms
- Stability control disabled
- ESC warning light
- Yaw rate data unavailable
- Traction control off
Common Causes
- Yaw rate sensor failure
- Wiring damage
- Module power loss
- CAN bus issue
- Sensor mounting loose
Diagnostic Steps
- Check sensor fuse
- Test sensor power and ground
- Check CAN bus wiring
- Inspect sensor mounting
- Test sensor output
Where to start: Yaw rate sensor typically mounted centrally in vehicle. Check mounting and wiring.
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