U0122
NetworkModule Communicationmoderate severityLost Communication with Vehicle Dynamics Control Module
What U0122 Means
Cannot communicate with the vehicle dynamics or yaw rate sensor module.
Symptoms
- Stability control light on
- ESC disabled
- Traction control not functioning
- Yaw rate data unavailable
Common Causes
- Yaw rate sensor module failure
- CAN bus wiring
- Module power loss
- Fuse blown
- Sensor damage from impact
Diagnostic Steps
- Check yaw rate sensor module fuse
- Test power and ground
- Check CAN wiring
- Inspect sensor for physical damage
- Check sensor mounting
Where to start: Check module fuse and mounting. Yaw rate sensors can be damaged by impacts or underbody contact.
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