Anyone run into the problem where the driver side vents are blowing only outside air?

 

There is an auto-diagnostic system that can be accessed w/o Honda HDS. It is fairly complex and is described in shop manual. (automanualsource.com for $22). I think someone found a free download earlier.

There are separate blend doors for each side and blend door motor may be toast of pax side. If you can see under dash, you may able to verify no movement.

good luck

 

Checked the blend motor it's fine. And also ran the diagnostic and it came back blank (which means no dtc).

Any other ideas ?