I am on vacation and the AC has stopped working in my '01 Prius. I have run the HVAC diagnostic and it shows the "21" code. The only thing I can find related to this code is the solar sensor fault. I have located the solar sensor on the dash but am not sure how to remove (to replace) it. I have gotten the little black cover off of it but don't know how the rest comes out. Does it just pull out or unscrew or do I have to squeeze some tabs or what? Any help is appreciated.
I have A/C problem as well with my 2002, And i got the 21 code last night. but here is the mistake, you must to make sure that you doing the test in the day light, direct sun light. I got the 21 code last night and today around 12pm, i got fast blinking that means; no faults at all.