Mass Air Flow Sensor (MAF)
Measures the amount of air entering the engine for fuel calculation.

The MAF sensor sends air volume data to the ECU, ensuring correct air-fuel ratio. Dust or oil contamination distorts readings, leading to rough idling or stalling. Cleaning the sensor with proper solvent restores accuracy. Regular air filter maintenance prevents MAF contamination. Accurate airflow data ensures efficient combustion and fuel economy.
Related Diagnostic Guide
This topic is part of CHEPQ’s system-level diagnostic framework.
For a broader understanding of how this component is analyzed in real-world diagnostics, refer to the following guide:
Applying This Knowledge in Practice
The diagnostic principles discussed above are commonly applied in real-world vehicle diagnostics. To put this knowledge into practice, explore professional automotive diagnostic tools designed to support system testing, fault analysis, and troubleshooting across modern vehicles.