Vehicle Communication Bus H (+) Open

Check these first

• An open in the bus H (+) wire between two modules
• A broken or backed out pin at a bus H (+) connector
• A module connector not fully seated on the bus H (+) circuit
• Corrosion eating through the bus H (+) conductor

What to do next

1. Read stored codes on every module that shares bus H
2. Trace the bus H (+) wire end to end for an open
3. Check each bus H (+) connector pin for a poor fit or backing out
4. Repair or replace the open section of the bus H (+) wire
5. Replace the module that stays off the bus H (+) line
6. Clear the code and retest

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