Code Definition

P1102 — Mass Airflow Sensor Signal Inconsistent with Throttle Position Sensor

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Mazda

About P1102

P1102 is a manufacturer-specific powertrain diagnostic trouble code recorded for Mazda vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P1102 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.

P1102 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

For Mazda vehicles, the P1102 fault code indicates a specific issue where the Mass Air Flow (MAF) sensor signal is inconsistent with the Throttle Position Sensor (TPS) readings. This code is set when the Engine Control Module (ECM) identifies a discrepancy between the airflow measured by the MAF sensor and the throttle position indicated by the TPS. Such inconsistencies can lead to irregular engine performance, as the ECM relies on these sensors for accurate air-fuel mixture calculations and engine timing adjustments.

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