[CRCRFT78]

I have a 1996 Cheyenne V6/5 speed that has been flashing the "check/service engine light" for awhile and today I had the mechanic at work scan it. He came back with several codes but I wasn't there for him to explain them to me. Can anyone break down the codes for me?

1.P0102 Mass Air Flow Sensor or Volume Air Flow Sensor
2.Circuit Low Input (not sure if this is part of the MAF sensor)?
3.P1406 Undefined Code?
4.P0700 (PD) Transmission
5.Control System P1192 (PD) (not sure if this is part of the transmission)

I'm not sure if these are in correct order, I'm going off of what he wrote down and how he listed them. Thanks in advance.