im going to take a wild ass guess that the 2 codes indicate that the Accumulator Pressure sensor on the valve body on the accumulator tank is bad.

looks like that sensor is around $130 dollars online so ill order one of those.

my compressor has been rebuilt with Bagpipingandy repair kit. at least that's what the receipt in folder i got with the car indicates.

i have another complete stock compressor turtle shell assembly from a 4.4 that had 4 level air suspension as well i can always throw that in to try it.