Mass or Volume Air Flow Sensor A Circuit Intermittent

Where it lives

For P0104, the sensor sits on the circuit this code reports. The description of P0104 reports a fault at the sensor.

Check these first

• A loose connector at mass air flow sensor A
• Intermittent wiring on the sensor A circuit
• A dirty mass air flow sensor A
• A failing sensor A element
• An intake leak that comes and goes

What to do next

1. Wiggle test the sensor A harness on live data
2. Inspect the connector terminals for a loose fit
3. Clean mass air flow sensor A
4. Replace sensor A if the signal drops out
5. Check the intake for a loose connection
6. Clear the code and retest

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