OBD II code P0102 mass air sensor volume air low voltage. Think about what it states. This states there is a problem with the mass air sensor. The problem is the volume air low voltage indicator. What this means is that the indicating circuit is either sending a low voltage or a 0 voltage indication to the ECM.
I ordered out a new mas air sensor and within it I learned a little bit more about the mas air sensor that I could not find elsewhere. Then I found this forum and the link to (
www.hhodevelopment.com/MAP.htm). This gave me enough information to test the mas air sensor.
In a nutshell, a new mas air sensor for this vehicle tests out at 15 ohms between the dc voltage ckt and ground terminal of the mas air sensor without power connected. The indicating ckt also tests out at 15 ohms between the ground terminal the mas air sensor terminal. The ground wire for the ckt harness tests out at 3 ohms to ground. The dc voltage on the harness when power is turned on tests out at 13 volts to ground as it should.
The mas air sensor that was existing in the car tested out at 15 ohms between dc voltage ckt and ground terminal of mas air sensor.
The indicating ckt tested at o ohms between the indicating ckt and ground terminal of the mas air sensor.
What does this mean? It means the mas air sensor indicating ckt is open. Likely a result of an internal wire ckt broken or disintegrated due to the heat that is produced within the unit when voltage is applied.
After testing my mas air sensor, I replaced the existing one with the new one and the problem was solved. I had to use a OBD II tester to reset the MIL as it does not appear that it will reset itself.
Now that you have the solution, good luck with your repair. Thanks to all those before me who posted information that aided in my problem solving.
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