What this code means

Loss of CAN bus communication with the ACC radar module.

Symptoms

• ACC disabled
• Multiple driver assist warnings
• Forward collision alert unavailable

Common causes

• CAN wiring fault to radar module
• Module connector disconnected
• Radar module power loss
• CAN bus termination issue at module

Diagnostic steps

1. Check CAN communication to radar module
2. Inspect module connector
3. Verify power and ground at module
4. Check CAN bus wiring continuity
5. Look for U-codes related to radar module

Repair notes

Repair CAN bus wiring or connector. Replace module if communication chip has failed.

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