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Q: Air Flow Dial on A/C control panel stuck on high. on 2005 Nissan Altima

It was about a week ago when I tried to turn down the Air Flow dial on the A/C control panel nothing happened and my A/C remained on full blast. Is this an easy fix?, or am I going to have to shell out some cash to resolve this problem?
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I'm having the same problem with my 2005 Altima. Did you ever get this resolved? What was the problem?
This could be a blend door issue. Is your fan on high or is it mainly that the temp is cold?

OK, so your temp can be adjusted but the Air Flow Selection is not working. Can you slow down and speed up the fan properly? If so, then your Air Selection Function is not working. Which is another type of blending function. Do you have Automatic Climate Control on your Nissan?
Yes. It is stuck on high, the temperature control is working just fine I can adjust the temperature just not the level of air flow.
I kinda have the same thing going on in my Toyota...can't control the fan speed or the temp....let me know if you find a solution...even though we have different vehicles, it might provide a clue of some sort!
You can scan the data stream of your Climate Control System, this is NOT a parts store code scan. This is a bit deeper, most shops will have a good scanner ( or they should ) that is capable of reading the live data stream from the Climate Control Computer. Then you can see what values are 'haywire' and then you can really determine the root cause(s) of your problem.
I had the same problem with my 05 pathfinder. I could turn the blow speed up but had difficulty turn it down. Also the knob that turned the speed up or down said not snap back the middle like the other temp knobs. I took the whole dash apart and took the actual climate control panel apart. What I found was that the middle knob had a black plastic circle peice inside the control panel itself, and that the center of this black plastic piece was cracked and that is what turned the switch on the circuit bored. I replaced that black knob win the one on the dual temp control side and used gorilla tape to temporary fix the cracked knob till I can order a new one. Upon replaceing the unit back in the car problem was fixed.
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