EVAP Purge Flow Sensor Circuit Intermittent

Where it lives

For P0469, the sensor sits on the circuit this code reports. The description of P0469 reports a fault at the sensor.

Check these first

• An intermittent EVAP purge flow sensor
• A loose flow sensor connector
• A chafed flow sensor wire
• Moisture in the flow sensor connector
• A clogged purge line causing swings

What to do next

1. Wiggle test the flow sensor harness while watching the signal
2. Inspect the flow sensor connector for moisture
3. Check the flow sensor wire for chafing
4. Check the purge line for blockage
5. Replace the flow sensor if the dropouts continue
6. Clear the code and retest

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