won't stay started

What is your question?

ok this is a follow up of my ? that car starts but won't stay started well found out the MAF sensor was bad so got one put in and work on test run n my wife drive 2 work but on her way home started 2 do same as b4 n check 4 code got P0102 MAF circuit low imput n code P0731 but no description on that code so now do I take it back out n have them replace it or could it b something else