U0430
NetworkModule Communicationmoderate severityInvalid Data Received From Steering Column Control Module
What U0430 Means
A module is receiving corrupt or implausible data from the steering column control module. This affects functions routed through the column such as wiper, turn signal, and steering controls.
Symptoms
- Steering column controls not working
- Warning light on dash
- Turn signals or wipers behave erratically
Common Causes
- Faulty steering column control module
- Wiring or connector fault at module
- CAN bus communication fault
- Low system voltage or poor ground
Diagnostic Steps
- Scan all modules for related codes
- Inspect column module wiring and connectors
- Verify power and ground at module
- Test CAN bus signals to column module
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