Will a bad MAF cause a lean condition?
With a dirty MAF, the engine will run lean because of the under-reported airflow. Fuel trim will become more extremely positive but no code will set because of the (programmed) open-loop condition.
Does a MAF sensor read temperature?
Furthermore, the mass air flow (MAF) sensor, also measures the temperature of the incoming air. The mass air flow (MAF) sensor is always located, in the air stream, before the throttle body.
What would a bad MAF sensor do?
A bad MAF sensor can cause too much fuel to be left in the combustion chamber, creating untimed detonations. You’ll experience this as poor drivability such as hesitations or sudden jerking motions, particularly during acceleration.
What can cause a MAF sensor to fail?
The sensor element could get contaminated or damaged. Sometimes, an improperly-installed or ripped air filter can cause the MAF sensor to fail sooner. Over-soaking a washable air filter with oil can also cause troubles with the air flow sensor.
What happens when a mass air flow sensor goes bad?
The mass air flow (MAF) sensor, part of your vehicle’s electronic fuel injection system, is responsible for calculating the total amount of air entering the engine. A faulty MAF sensor can cause your vehicle to run too rich or run too lean.
What is the code for mass air flow sensor?
This Code’s full read out is: P0101 – Mass Air Flow Sensor Circuit Range/Performance. The engine computer uses the MAF sensor signal to determine how much fuel needs to be injected to meet the proper air-fuel ratio.
Where can I find the trouble code on my air flow sensor?
When the air flow sensor signal varies from the expected range, the PCM records a fault and stores the corresponding trouble code, illuminating the Check Engine light on the dash. This trouble code can be retrieved with a scan tool. The following trouble codes are usually associated with a mass air flow sensor: