Bearish, that's good info. It tells us that your rear valve block is fine and there are no leaks in your rear struts or lines.
Now... let's try to find out where the problem actually lies.
The error code you got, c112f-72, was this before you took the car into the shop or after the work was done? Or both? It is most likely due to a faulty valve block, and I would obviously guess the front valve block, but I want to make sure it was there before the compressor replacement. If not, it may be possible it's due to other factors.
What tool did you use to read the code? Do you have a diagnostic tool at home? Any way to read the main system pressure after the fuses are out and the car has sat for a while?
With the information you've provided so far, I would be most likely to replace the front valve block as the next course of action (it's relatively cheap and easy), but let's see if we can't get a little more detail before jumping into that.
Now... let's try to find out where the problem actually lies.
The error code you got, c112f-72, was this before you took the car into the shop or after the work was done? Or both? It is most likely due to a faulty valve block, and I would obviously guess the front valve block, but I want to make sure it was there before the compressor replacement. If not, it may be possible it's due to other factors.
What tool did you use to read the code? Do you have a diagnostic tool at home? Any way to read the main system pressure after the fuses are out and the car has sat for a while?
With the information you've provided so far, I would be most likely to replace the front valve block as the next course of action (it's relatively cheap and easy), but let's see if we can't get a little more detail before jumping into that.