F150 mass air flow sensor problems code#

The MAF communicates with the engine control module (ECM), and if it sends misread air amounts, the ECM will adjust how much fuel it allows into the combustion chamber. OK, let's turn the page and get this show on the road.Tasked with keeping track of how much air flows into the engine, the mass airflow (MAF) sensor plays a key role in determining how much air needs to be in the combustion chamber. And so the PCM does not inject the correct amount of fuel for the true amount of air entering the engine.Īs I mentioned before, the PCM can't tell you that the MAF sensor is dirty, since a dirty MAF sensor DTC does not exist and as easy as it is the check to see if it's dirty or not, there's really no need for one.

Thus a dirty (contaminated) MAF sensor still creates a signal but it's a MAF signal that is not conveying the correct amount of air that's entering the engine. When the mass air flow sensor on your Ford car (pick up, van, mini-van or SUV) starts to get dirty, the dirt (technically called: contamination) starts to interfere with the way the MAF sensor measures the incoming air. In knowing the exact amount of air entering the engine, the PCM can now calculate the correct amount of fuel to inject into every cylinder. The PCM uses the MAF signal to know how much air is entering the engine.

Fails the state mandated yearly emissions test.

Engine running lean which causes the PCM to set one or both of the following diagnostic trouble codes:.

The engine idles fine, but when you accelerate the vehicle (not just the engine) is when you feel the lack of power.

F150 mass air flow sensor problems code#

Unfortunately, the PCM (Powertrain Control Module = Fuel Injection Computer) is not smart enough to sense a dirty MAF sensor and so you're not gonna' get a dirty MAF sensor diagnostic trouble code lighting the check engine light.Ī dirty MAF sensor will cause one or all of the following symptoms: The most common symptom of a dirty mass air flow (MAF) sensor is a lack of power. I've always thought the CRC MAF sensor cleaner a tad too expensive (but it beats using something unapproved and frying the MAF sensor) and so on occasion, I have also used a regular electronics spray cleaner from my local Radio Shack or Fry's electronics store with the same success. The most common/popular is the CRC Mass Air Sensor Cleaner (part number: 05110). TIP 4: Your local auto parts (like AutoZone or O'reilly Auto Parts) will have the appropriate MAF sensor cleaner.

Gasoline will leave a petroleum residue on the hot wires and this residue will attract more dirt (like a magnet to metal), not to mention that gasoline is just too dangerous to use as a cleaner. Both of these are very harsh solvents and can damage the inner circuitry of the MAF sensor and now you'll have a bad MAF sensor on your hands (this I can vouch for from personal experience) TIP 2: Do not use carburetor spray cleaner or brake cleaner. Avoid physically touching them, like with a cotton swab, since this could break the hot wires. TIP 1: The safest way to clean the MAF sensor's hot wires, is to just spray them and let them air dry. You can find this tutorial in Spanish here: Cómo Limpiar El Sensor De Flujo De Aire (MAF) De Ford (at: ). No Improvement In Performance After MAF Clean.