Electric/Auxiliary Transmission Fluid Pump Phase U-V-W Circuit High

Where it lives

For P0C22, the pump sits on the circuit this code reports. The description of P0C22 reports a fault at the pump.

Check these first

• A pump phase U-V-W voltage above its normal range
• A short in the pump phase U-V-W wiring
• A failing aux transmission fluid pump
• A transmission control module no longer matching the signal

What to do next

1. Read the aux fluid pump phase voltage on a scan tool
2. Test the pump phase U-V-W wiring for a short
3. Check the transmission fluid level
4. Test the aux fluid pump for a fault
5. Replace the aux fluid pump if the circuit tests good
6. Clear the code and retest

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