Electric/Auxiliary Transmission Fluid Pump A Driver Circuit Performance

Where it lives

For P0C29, the part to look at first is the pump named here.

Check these first

• A short in the pump A driver circuit
• An open in the pump A driver circuit
• Corrosion or water in the pump A driver circuit
• A failed aux transmission fluid pump A

What to do next

1. Read the aux fluid pump A driver status on a scan tool
2. Test the pump A driver circuit for an open or short
3. Inspect the driver circuit connectors for corrosion or water
4. Test the aux fluid pump A for a fault
5. Replace the hybrid transmission control module if the circuit tests good
6. Clear the code and retest

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