U0122moderate severityNetwork
Lost Communication with Vehicle Dynamics Control Module
on 1999 Dodge Ram Van 5.9L V8 · 4WD
What this code 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
Repair notes
Check module fuse and mounting. Yaw rate sensors can be damaged by impacts or underbody contact.
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus