Does the climate computer retain the codes?

Mine has been doing the flash-thing and becomes confused but *only when it's hot out*. When it's cold like today it works just fine.

I suspect the temp sensor and I shop-vacced the dust out of it but it didn't help. I'd normally just wait for things to fail completely, except for my wife. Since I need to manually override the climate control it just works on "Antarctic" cold, or the ambient temperature or "Death Valley" hot. My wife is getting very very annoyed. I have a service appointment but there's no point if the code isn't retained.

-BTC

'98 V70 T5 5-speed, 173k mi, heated velour cloth comfy chairs, factory HD suspension, Bilstein HD, front IPD stabilizer bar, Volvo strut tower brace and skidplate, XC grill, C70 jewel E-Codes, V-1, Lidatek, IPD stuff, JB Weld, Original Duck tape, zip-ties, two '06 Honda license plate nut impressions in back bumper (gift from daughter), Mobil-1 since new.

"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair." - Douglas Noel Adams (1952 - 2001)