U0067
NetworkModule Communicationhigh severityControl Module Communication Bus F High
What U0067 Means
The voltage on the F communication bus is higher than expected, disrupting data flow. Modules may fail to communicate properly.
Symptoms
- Communication faults
- Dash warning lights
- Features inoperative
Common Causes
- Bus F shorted to voltage
- Wiring fault
- Corroded connector
- Faulty control module
Diagnostic Steps
- Scan network for U-codes
- Measure bus F voltage
- Inspect for short to power
- Repair wiring or replace module
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