You should read 0 (or close to 0) Ohms of resistance. If your meter reads infinite resistance, probably the MAF sensing element is burnt or broken.

What is the resistance of a mass air flow sensor?

The MAF resistance is checked as follows: ohmmeter is connected between terminals 2 and 3 of the MAF sensor’s connector – the resistance should be 2.5 – 3.1 Ω.

What is a good reading for a mass air flow sensor?

With the engine at idle, the MAF’s PID value should read anywhere from 2 to 7 grams/second (g/s) at idle and rise to between 15 to 25 g/s at 2500 rpm, depending on engine size. Most manufacturers provide specifications for air flow at idle; some will provide specifications at several engine speeds.

Can a bad mass air flow sensor cause lean codes?

A bad mass air flow sensor causes various driveability problems, such as a no-start, stalling, lack of power and poor acceleration. A bad or contaminated mass air flow sensor can cause trouble codes P0171 System Too Lean and P0144 System Too Lean.

What codes can a bad MAF sensor cause?

Mass Air Flow Sensor Symptoms Some of the most common MAF-related DTCs include P0100 through P0103. A faulty MAF sensor can also trigger other codes, such as those pertaining to an air/fuel ratio imbalance or an engine misfire.

What happens if you unplug a MAF sensor?

If you plug it in it will die if the car is running. If you unplug the mass air flow sensor the car will start. If you try to plug it in while it’s running the car will die.

What does the mass air flow sensor measure?

Download measurement. The Mass Air Flow (MAF) sensor measures the amount of passing air going through the air intake system. The sensor measures the amount of passing air with a resistive platinum wire that is placed in the air stream of the air intake system.

What are the symptoms of a bad mass air flow sensor?

Symptoms Of A Bad MAF Sensor. The most common symptoms of a bad MAF sensor are: A MAF sensor code. Lean and/or rich code(s). Fuel trim code(s). A tremendous lack of power upon acceleration. Black smoke coming from the tail-pipe. Vehicle may idle rough and stall.

How do you test a MAF sensor on an air conditioner?

Connect the positive voltmeter terminal to the wire connected to the MAF sensor signal terminal. Remove the air duct. Remove the air filter assembly so that the valve (plate) of the MAF to be easily opened and closed. Open and close the valve several times to check if it operates smoothly and does not stuck.

What are the different types of air flow sensors?

A sensor which measures the volume (l / h) of the air flow – Vane Meter Sensor (VAF and also known as LMM). A sensor which measures the mass (kg/h) of the air flow – Hot Wire MAF sensor (also known as HLM). A sensor which measures the mass (kg/h) of the air flow – Hot Film MAF (HFM).