Hybrid/EV Electronics Coolant Pump A Performance

Where it lives

For P0CEA, the part to look at first is the pump named here.

Check these first

• Electronics coolant pump A running slow or below command
• A worn pump A impeller or motor
• Air locked or low coolant in the pump A loop
• A restricted pump A inlet or clogged passages
• A weak control signal to pump A

What to do next

1. Command electronics coolant pump A to full speed and watch flow
2. Check the pump A loop for air and low coolant
3. Inspect the pump A inlet and passages for restrictions
4. Test the pump A control wire for opens and shorts
5. Replace electronics coolant pump A if it underperforms
6. Clear the code and retest

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