Code Definition

P010B — Airflow sensor volume signal error - sensor 2

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P010B

P010B is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P010B is stored, the module has detected a signal or supply voltage lower than the expected operating range; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P010B is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The fault code P010B is set when the Engine Control Module (ECM) identifies an error in the signal from the second airflow sensor, typically a Mass Air Flow (MAF) sensor. This error could manifest as an implausible signal, a signal that is inconsistent with other engine parameters, or an erratic signal pattern. The ECM uses the MAF sensor to measure the volume of air entering the engine, and an erroneous signal can lead to improper air-fuel mixture calculations, affecting engine performance and emissions.

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