todd332 Posted December 13, 2004 Share Posted December 13, 2004 heya guys and gals, I did a Code check using my Climate control and it is flashing 21 ..Anyone know what this means ? The check engine light is not on. I have the 92 ES 300.. thanks Quote Link to comment Share on other sites More sharing options...
vcv10guy Posted December 14, 2004 Share Posted December 14, 2004 Code 21 means that there is something wrong with your solar sensor (the button looking sensor in the middle of your dash). If you checked it in the dark, then that code will go off even though it may be okay. If it's daytime you checked it, then there is a problem with it. SK actually posted the meaning of the codes here AC Codes Quote Link to comment Share on other sites More sharing options...
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