It's quite possible that the mass air flow sensor is either contaminated or faulty. However, it's not the only potential problem you are facing. Here are some of the most common P0102 causes. Dirty or faulty mass air flow sensor. Intake air leaks. MAF sensor wiring problem. Dirty air filter. Faulty PCM (unusual) What the P2227 code means. The barometric (BARO) sensor is used by the engine control module (ECM) to measure the pressure of the atmosphere. The pressure is affected by weather conditions, air volume, and altitude. A diaphragm is built into the BARO sensor which opens and closes at different atmospheric conditions. A Stand-Alone Intake Air Temperature Sensor Location. A stand-alone Intake Air Temperature sensor of the car is a separate two-wire sensor, installed pre-throttle in the air duct between the air filter box and throttle body. Sometimes, It is located in the air cleaner housing or screwed into the intake manifold. MAF Housing with air straightener engineered to fit Ford Focus, Focus ST, Fiesta, Fiesta ST, Escape, & Fusion slot style mass air flow sensor. Measures 6" in length; CNC machined from 6061 billet aluminum; 1/4" aluminum honeycomb air straightener screen; Flange designed to match the factory shape of the sensor; Undercut ends for secure clamping Most modern vehicles with fuel injection do. The location of the MAP sensor is the intake manifold whereas the MAF sensor is usually located just before the air filter assembly. They measure 2 different parameters. The Manifold Absolute Pressure (MAP) sensor is used by the Powertrain Control Module (PCM) for engine load input. Last week my check engine light came on and I got the following codes through a code reader: P2227 - BP (Barometric pressure) Circut Range/Performance. P2230 - BP (Barometric pressure) Circut Intermittent. My mechanic friend suggested replacing the Mass Airflow Sensor, so I did BUT the codes came back and the engine is still sluggish. Good evening everyone! Below is an introduction to our very first steps in developing our new Performance Intake for the MK3 Focus ST. As always, you can also follow our progress on our blog at the link below. Ford Focus ST Performance Intake 2013+ | Mishimoto Engineering Blog Ford Focus ST Unplug the electrical connector on the mass air flow sensor. 3. Use a flathead screwdriver to unfasten the air intake hose clamp at the throttle body. Remove the clips securing the air filter housing and lift out the air intake tube. This is a good time to replace the air filter. 4. Inspect the MAF sensor. In stock form, the R35 ECU measures airflow using a Mass Airflow (MAF) sensor located in the stock intake system. As modifications add up and increase power, the airflow can increase to the point that it exceeds the MAF sensor's maximum capacity, preventing the ECU from accurately measuring air mass, and thus unable to deliver the appropriate Duralast New Mass Air Flow Sensor DL-3109. Part # DL-3109. SKU # 564677. Limited-Lifetime Warranty. Check if this fits your 2018 Ford Focus. $13299. Free In-Store Pick Up. SELECT STORE. Home Delivery. EBGMJrS.