Mass or Volume Air Flow Sensor B Circuit

Where it lives

For P010A, the circuit described runs through the sensor. The description of P010A reports a fault at the sensor.

Check these first

• A failed mass air flow sensor B
• An open or short in the sensor B wiring
• A fault on the 5V reference to sensor B
• An intake leak after sensor B
• A faulty powertrain control module input

What to do next

1. Read the sensor B signal on a scan tool
2. Check the 5V reference at the sensor B connector
3. Inspect the sensor B wiring and ground
4. Check the intake for leaks after sensor B
5. Replace mass air flow sensor B if the signal is dead
6. Clear the code and retest

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