Hi there:
DTC P0102 is a fairly straight forward code pointing to a fault in the Mass Air Flow Sensor. I suggest check to make sure there are no holes or air leaks in the air filter housing or ducts.
Also, check that the air filter element is not excessively dirty and restricting air flow; at this point, if the visual inspection is ok, suspect a faulty Mass Air Flow sensor.
Check in THIS LINK information about description and additional tests.
Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.
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