Yes I do mean cabin heat on the left side. The control valve will not close unless I add ground to the left side of the wire harness on the valve. Do you think the message I read " (h299) 02 1/2 heater control circuit" means the 02 heater circuit and not the actual Cabin HEATING SYSTEM? Makes sience. I just thought that these are the ONLY issues I have so could they be connected?