AC compressor not turning on - code 71 & 74

Hi everyone, longtime lurker, first time poster. I have a 2012 Prius 2. Recently replaced egr cooler, replaced egr valve, cleaned intake manifold, replaced Pcv, replaced water pump, replaced thermostat and finished all work yesterday. Car runs fine now and is throwing no check engine codes. However, this morning I was wanting it to idle on and off before a long road trip so I rolled down the windows and turned the ac to auto. The fan blows but the ac compressor won’t come on and it just blows warm air. I did the trick where you press the on button twice while holding down the ac and circulation buttons. This produced the code 71 and 74. Does anyone have any advice? I’m completely confused what is going on.