U0071
NetworkModule Communicationhigh severityControl Module Communication Bus G Shorted To Bus G High
What U0071 Means
The low side of bus G is shorted to the high side, corrupting the data signal. Communication across the network typically stops.
Symptoms
- Multiple modules offline
- Warning lights active
- Erratic behavior
Common Causes
- Bus G wires shorted together
- Pinched harness
- Faulty connector
- Failed control module
Diagnostic Steps
- Scan all modules
- Check for short between bus G high and low
- Inspect harness
- Repair wiring or replace module
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