Motor Electronics Coolant Pump A Control Circuit Intermittent/Erratic

Where it lives

For P0E4F, the pump sits on the circuit this code reports. The description of P0E4F reports a fault at the pump.

Check these first

• A loose or backed-out pin in the motor electronics coolant pump A connector
• A pump A control wire chafed from vibration
• A pump A control module with an intermittent internal fault
• Moisture in the pump A connector

What to do next

1. Watch pump A operation while wiggling its connector
2. Inspect the pump A connector for loose pins and corrosion
3. Check the pump A control wiring for rubs and chafing
4. Command pump A and listen for dropouts
5. Replace the pump A control module if the fault stays intermittent
6. Clear the code and retest

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