BMW Mass Air Flow Sensor - VDO 13627566984

Product Information

This OE VDO mass air flow (MAF) sensor features a 6-pin connector and is engineered to accurately measure the amount of air entering your BMW’s intake system. Using a hot film sensing element, it detects changes in airflow based on how the passing air cools a heated surface. The resulting data is sent to the DME (engine control unit), which adjusts the fuel injection and ignition timing accordingly.

Over time, contamination or electrical fatigue can reduce the accuracy of the sensor. This can lead to rough idling, poor throttle response, or a check engine light. A common way to test a failing MAF sensor is to unplug it—if performance improves, replacement is recommended.

Mass Air Flow Sensor
Essential for maintaining proper combustion, the MAF sensor ensures that the engine receives the correct air/fuel ratio under varying load and temperature conditions. This sensor helps reduce emissions, improve fuel economy, and maintain smooth engine operation.

Failure Symptoms:

• Check engine light: Often linked to MAF-related codes like P0100–P0104.
• Rough idle or stalling: Due to inaccurate airflow data disrupting fuel delivery.
• Fuel trim imbalance: Rich at idle or lean under acceleration.
• Consistently poor fuel mixture: May lead to excessive fuel use or hesitation during driving.