Mass or Volume Air Flow Sensor A Circuit High

Where it lives

For P0103, the circuit described runs through the sensor. The description of P0103 reports a fault at the sensor.

Check these first

• A short to voltage on the sensor A signal wire
• A mass air flow sensor A that is contaminated and stuck high
• A failed mass air flow sensor A
• An incorrect sensor A installed
• A faulty ECM input for sensor A

What to do next

1. Compare the sensor A reading to calculated load
2. Inspect the sensor A wiring for a short to voltage
3. Check the air filter for a restriction
4. Clean or replace mass air flow sensor A
5. Verify the ECM if the signal stays high
6. Clear the code and retest

Look up another code