U0051
NetworkModule Communicationhigh severityControl Module Communication Bus E Shorted To Bus E High
What U0051 Means
The low side of bus E is shorted to the high side. This corrupts the differential signal and blocks module communication.
Symptoms
- No module communication
- Warning lights on
- Systems inoperative
Common Causes
- Bus E wires shorted together
- Chafed harness insulation
- Faulty control module
- Corroded connectors
Diagnostic Steps
- Scan for communication codes
- Check bus E high and low wiring
- Measure resistance between wires
- Isolate and test modules
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