However, 7.4v on the crank sensor definitely sounds wrong. May be an open circuit, and some floating voltage. Try back-probing the pin with the sensor plugged in. The ECU also needs about 200 rpm to fire up the injectors, so the crank sensor would also stop them operating. The mass air flow sensor is the first sensor that reads the amount of air coming into the motor at any point of time when the vehicle is running. The mass air meter can usually be found just after the air box. The MAF sensor may also be located in a different position down the intake plenum but will always be before the throttle body. The powertrain control module (PCM) uses that reading along with other sensor parameters to ensure proper fuel delivery at any given time for optimum power and fuel efficiency. This P0102 diagnostic trouble code (DTC) means that there is a low condition detected in the Mass Air Flow (MAF) sensor or circuit. The PCM detects that the actual MAF 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. The P2281 diagnostic trouble code is an indication of the existence of an air leak between the MAF sensor and the Throttle Body. The MAF sensor uses an electrical wire to make a determination as to the amount of air that is being permitted to enter the air intake system. This information is sent through this wire and delivered to the powertrain UK/Ireland Location: Other/NonUK. Posted October 27, 2013. The Focus MK2/MK2.5 with 1.4 and 1.6 Duratec (Sigma) engine do not have an Idle Air Control (IAC) valve or Mass Air Flow (MAF) sensor. The amount of air going into the engine is calculated by the PCM using a Manifold Absolute Pressure (MAP) sensor which is mounted at the intake manifold. 5GVfp.

focus st maf sensor location