P0107 & P0108 MAP SENSOR DIAGNOSIS ON MAZDA6 2.3L - MechoMedics

Saturday, 3 February 2018

P0107 & P0108 MAP SENSOR DIAGNOSIS ON MAZDA6 2.3L

DTC
P0107: MAP(Manifold Absolute Pressure Sensor)/Barometric Pressure (BP) sensor circuit low input.
P0108: MAP(Manifold Absolute Pressure Sensor)/Barometric Pressure (BP) sensor circuit high input.





2002 to 2007 Mazda6 is a great product no doubt, bearing fully in mind that it shares parts and design with most of ford products. it is a car that has the exterior styling of a first generation Lexus ES class, safe its missing chromes and the advanced Toyota styling. Although the interior styling and design doesn't really match up to the taste of what i will expect. Well that's all for the appraisal and description.

Manifold Absolute Pressure (MAP) Sensor located under the Intake Manifold's base. 


The 2.3L 4 Cylinder Engine uses a Mass Air Flow (MAF) Sensor and a Manifold Absolute Pressure Sensor (MAP)/Barometric Pressure (BP) Sensor to estimate the mass or volume of Air intake per time and this calculation will help the Powertrain Control Module (PCM) to estimate the quantity of Fuel to be supplied per time by the 4 Injectors for optimal and stoichiometric operation of the engine.
The dicey thing is that with the MAF sensor faulty the Engine will run rough at idle and it will not startup if the sensor is totally disconnected even when the MAP sensor is connected.
Similarly to this, if the MAP sensor is faulty the Engine will run fine at idle and it will start up nicely; but the engine will stall and quench at higher engine load (Powersteering ON, Drive selected, A/C Loaded, e.t.c.).
Detailed explanation for this is that the Engine is designed to gather accurate Airflow volume or Mass when the engine load is less than 40%, that is at Idle and no extra load. With higher Engine Load only the MAP sensor can estimate for  more accurate value since it is located on the Manifold.

2005 Mazda6 MAP sensor with 4 Pin 

when Diagnostic Trouble Code (DTC) P0107 and P0108 are output simultaneously the fault is triggered by an electrical fault or intermittent sensor connector harness.
Check out the Connector, the wiring e.t.c.
Live Data diagnosis will display the MAP value in Pressure and in Voltage. When Voltage values indicate 0V, 4.99V or 5V a fault definitely exist. That capture is definitely a fixed job!

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