Gear Shift Control Module B Communication Circuit High

Where it lives

For P085C, the circuit described runs through the module. The description of P085C reports a fault at the module.

Check these first

• An open in the module B data bus
• A data bus shorted to voltage
• A failed module B
• A chafed module B harness

What to do next

1. Scan all modules for communication faults
2. Test the module B data bus for an open
3. Test the bus for a short to voltage
4. Inspect the module B harness
5. Replace module B if it does not communicate
6. Clear the code and retest

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