sjc6765 Posted October 20, 2007 Share Posted October 20, 2007 I did a test on my A\C after it failed,, (holding auto and recirc then turn the key on) and got a code 21, wich means a sunlight sensor failure. I have no idea what that has to do with the Air conditioning. Any help?? Thanks. Quote Link to comment Share on other sites More sharing options...
troner Posted October 21, 2007 Share Posted October 21, 2007 I did a test on my A\C after it failed,, (holding auto and recirc then turn the key on) and got a code 21, wich means a sunlight sensor failure. I have no idea what that has to do with the Air conditioning. Any help??Thanks. You have to do the test under the sun light, I'm not kidding... I read another post with this information: "(3) - If testing is done in a dark area, Code 21 may set even though system is normal. Shine a light at solar sensor and recheck codes." Quote Link to comment Share on other sites More sharing options...
sjc6765 Posted October 21, 2007 Author Share Posted October 21, 2007 I did it in BRIGHT sunlight,, still got code 21. Quote Link to comment Share on other sites More sharing options...
troner Posted October 21, 2007 Share Posted October 21, 2007 I did it in BRIGHT sunlight,, still got code 21. I don't know dude, maybe your sun light sensor is bad, when you are in a dark area or at nigth the lights turn on when you are in auto mode? Quote Link to comment Share on other sites More sharing options...
rankiaj95sc Posted December 14, 2007 Share Posted December 14, 2007 I get the same code but I also have other AC issues. I looked at the factory service manuals and the sensor is tough/expensive to replace. Try to see if it can disable the AC altogether or if it is used to supplement the controls. what I am getting at is maybe here is another AC problem that is more important, and the sunlight senor only contibutes +/- 10 degrees to the system output... any thoughts? Cheers, Artie Quote Link to comment Share on other sites More sharing options...
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