2011 odessey heating problem,heat on passenger side vents are hot and drivers side luke warm,will not defrost windshield any ideas on the problem?

 

welcome to the forum. possible blend door actuator gone bad.

 

i had the blend door checked by my mechanic and he said it was working,now he wants to flush the heater core ?i am not sure what it is but winter is coming,thanks dave

 

your mech may be right since he did check the blend door, i was going to suggest the heater core next. the radiator hot water goes through the heater core, (small radiator in the center consul area to give interior/defrost heat.) at times it can leak or get plugged up depending on how often the radiator fluid is changed.