Why is my ecu throwing these codes?

[empie1]

I hooked up dsmlink for the first time in like 5 months (old lap top died).I checked the codes stored and heres what I got:

100-volume air flow circuit
105-Barometric pressure circuit
110-Intake air temp circuit

I still have the cars original mas is there.It has 150000k on it sp I am assuming it could be faulty (1 of 4 parts under the hood I havent replaced...literly ).But is there anything other than a bad mas that could make my ecu throw these codes?

 

[BrokenTsi]

Sounds like you're on the right track. Clear the codes and see if they come back. If they do, replace the maf. Does it run good?

 

[empie1]

Sounds like you're on the right track. Clear the codes and see if they come back. If they do, replace the maf. Does it run good?

It runs a little rich and the idle sucks.But I am pretty sure my isc is also shot.