U0072
NetworkModule Communicationhigh severityControl Module Communication Bus G High
What U0072 Means
The voltage on the G communication bus is higher than expected, disrupting data flow. Modules may fail to communicate.
Symptoms
- Communication faults
- Dash warning lights
- Features inoperative
Common Causes
- Bus G shorted to voltage
- Wiring fault
- Corroded connector
- Faulty control module
Diagnostic Steps
- Scan network for U-codes
- Measure bus G voltage
- Inspect for short to power
- Repair wiring or replace module
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