Hybrid/EV Battery Pack Coolant Pump A Control Circuit/Open

Where it lives

For P0C47, the circuit described runs through the pump. The description of P0C47 reports the pump as open.

Check these first

• A failed battery pack coolant pump
• An open or short in the coolant pump control circuit
• A blown coolant pump fuse or lost power feed
• A poor or corroded pump connector

What to do next

1. Check the coolant pump fuse and power feed
2. Inspect the pump connector and wiring for damage
3. Command the coolant pump on with a scan tool and confirm it runs
4. Check the control signal at the pump connector
5. Replace the coolant pump if it does not respond
6. Clear the code and retest

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