Ok so im driving home 2 weeks ago and my air conditioning just stops blowing cold and just starts blowing room temperature.... my uncle has his own mechanic shop so i take my car there any time it needs anything so that i dont get charged crazy prices but when i took it to him he said the compressor was fine... he checked my ambient temp switch---pressure switches---fuses--- and he looked in my computer but could only come up with 2 codes that had been thrown... one was for my 02 censor cause i have exhaust on the car and the other was 01330 but he said only vw has the exact specifics and i have to end up taking it to them.... i need help cause i really dont want to go there.... any suggestions???

also when i click the AC switch on from the inside of my car it sends the signal to the control module cause the car idles different and also the computer my unlce has showed the signal getting there but we cant figure out why the compressor wont turn on after that.....