U0122 Lost Communication With Vehicle Dynamics Control Module
What does U0122 mean?
U0122 — Lost Communication With Vehicle Dynamics Control Module. This is an OBD-II diagnostic trouble code a scanner retrieves when your vehicle's computer detects lost communication with vehicle dynamics control module. The level of risk depends on how the vehicle is currently running and how long you've been driving with the light on.
Common causes of U0122
- Shorted or open bus wiring to the VDC module
- VDC module power or ground fault
- Blown module fuse
- Failures in the ABS/yaw sensor network
- Corrosion or connector damage
How to fix U0122
- Check fuses and relay supplying the vehicle dynamics module
- Verify power and grounds at the module
- Inspect the module's network wiring and connector
- Scan all modules to map the network dropout
- Replace the module after confirming power and wiring