[noR]

The air pump is probably by bad hoses. Either vacuum lines. ($1/ft at local parts store) or the brittle, accordian hoses (the 2 that are about 1.4" diameter). Those are more expensive and I haven't found a non-dealership replacement set yet.

I'd like to get a whole different material becaues I found mine had ALOT of pinhole leaks.

Last item I could think that would cause those errors would be a MAF sensor. Probably wouldn't hurt to clean it. (isopropyl alcohol, in a baggie; swish gently. They're kinda fragile ish).

 

[noR]

disconnect the main air hose from the intake.

Unscrew the MAF sensor from the air box. (torx bit w/ a hole in the tip)

Put the MAF in a baggy; dump some isopropyl in there, and swish it around. Make sure you get the area exposed to the air; that's really what you're trying to clean.

Swish it around for a minute or so; then take it out and let it air dry; then reassemble.