Vehicle Communication Bus E Performance

Check these first

• High resistance in the bus E wiring slowing the data transitions
• A module on bus E dropping messages under electrical load
• A loose shared ground among the modules on bus E
• Electrical noise from an added accessory coupling onto bus E

What to do next

1. Read stored codes on every module that shares bus E
2. Graph bus E traffic on a scan tool while the symptom is present
3. Test the bus E wiring for added resistance and loose grounds
4. Remove added accessories one at a time to rule out noise on bus E
5. Replace the module that drops off bus E under load
6. Clear the code and retest

Look up another code