How To Tell If The MAP Sensor Is Working Properly

The MAP sensor monitors the absolute pressure in the intake manifold and provides information to the car's computer to determine the amount of gasoline to inject into the engine.
A malfunction of the MAP sensor can cause VERY HIGH GASOLINE CONSUMPTION, or on the contrary a LOSS OF ENGINE POWER, depending on the type of damage the MAP sensor has.
It is necessary to know how to test the MAP sensor, its operating voltages, test the wiring, circuit resistances, etc.
A scan of the car will help guide the failure of the MAP sensor: In case the MAP sensor delivers a voltage lower than 0.5V then it will turn on the FAULT CODE P0107, while if the voltage remains at 5V then the MAP FAULT CODE it will be P0108.
The above codes can also be generated by a wiring fault, either a short to ground, an open circuit, a short to 5V source.
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