2012 nissan versa mass air flow sensor problems

When the MAF sensor fails, the ECU will incorrectly adjust the air-fuel mixture, causing the engine to run rich. Your car’s ECU is a computer responsible for processing and handling a variety of tasks, including translating the MAF sensor signal into usable data. Why Does Unplugging The Sensor Make The Car Run Better? If the symptoms are minor, the sensor can be cleaned with a dedicated MAF cleaner, but if unplugging the sensor makes the car run better, it should be replaced. Over time, the particles accumulate on the MAF sensor, causing it to produce inaccurate readings. However, the air filter does not filtrate 100% of the particles, especially if it’s old. As it is located after the air filter, the air flowing over it should be clean.

The MAF sensor is a very accurate, but also a very delicate component. With no fuel wasted, the fuel economy is at its best, and it also reduces the negative effect on the environment. The optimal air-fuel mixture leads to higher power output and ensures all the fuel gets used up. It has a “hot wire” which is heated to a constant temperature. The air flowing over it is trying to cool it down, and the exact volume of air can be measured by taking into account the electrical current necessary to heat the wire, with more airflow requiring a stronger current.įor modern fuel injection systems, precision is everything, and knowing how much air is available in every millisecond allows the ECU to adjust the fuel injection frequently. The mass airflow sensor measures the volume of air going into the throttle body. I strongly suggest that you read the following article as I’ll explain how the MAF sensor works, why it’s important and why you shouldn’t drive without it, even if the car is running better. If the car is running better with the MAF sensor unplugged, it means that the sensor is sending inaccurate readings and needs to be either cleaned or replaced. After unplugging it, the car seemingly runs better than it did with the MAF sensor.

You’ve been trying to identify the cause of poor engine performance and your search lead you to the mass airflow sensor.

2012 nissan versa mass air flow sensor problems