As the mileage increases on your Q50, it can happen that increasingly inaccurate values are sent to the engine control unit. The mass air flow sensor is a wearing part. And over time when enough dust accumulates, the sensor starts to give erroneous readings. When the vehicle is running, dirt and other airborne particles that escape from the air filter can settle on the sensor. Air filters are effective at cleaning the air to a certain extent. The most common cause of a malfunctioning MAF sensor in Infiniti Q50 is dirt and grime accumulation on the sensor.

What causes MAF sensor to fail in Q50? Dirt accumulation This can cause the engine warning light to illuminate in the instrument cluster and the fault can be read out by a diagnostic device. The engine runs too “lean” or too “rich”.

The optimal amount of fuel can no longer be calculated which results in either too little or too much fuel injected into the combustion chambers. If the MAF sensor is defective or dirty, it does not send correct measured values to the control unit of Q50. What happens when MAF sensor malfunctions in Infiniti Q50? It is not only important for power delivery in your Q50, but also for the lowest possible pollutant emissions. The mass air flow sensor is part of the engine’s intake system and is located between the air filter and the throttle body.

Infiniti mass air flow sensor problems