EVAP System Leak Detection Pump Heater Control Circuit/Open

Where it lives

For P240A, the pump sits on the circuit this code reports. The description of P240A reports the pump as open.

Check these first

• An open in the leak detection pump heater control wire
• A failed leak detection pump heater
• A backed out pin at the heater connector
• A missing control module output to the heater

What to do next

1. Command the leak detection pump heater with a scan tool
2. Check continuity of the heater control wire
3. Measure the heater element resistance
4. Inspect the heater connector pins
5. Replace the leak detection pump if the heater circuit is good
6. Clear the code and retest

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