U0134
NetworkModule Communicationhigh severityLost Communication with Active Steering Control Module
What U0134 Means
Cannot communicate with the active or four-wheel steering control module.
Symptoms
- Steering warning light
- Active steering disabled
- Rear steering inoperative
- Steering feels different at speed
Common Causes
- Active steering module failure
- CAN bus wiring
- Module power loss
- Fuse blown
- Steering rack actuator issue
Diagnostic Steps
- Check active steering module fuse
- Test power and ground
- Check CAN wiring
- Test steering actuator
- Monitor steering angle data
Where to start: Active steering failure may affect vehicle handling. Drive cautiously. Check fuses and wiring.
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