There is a proportioning valve and once the repair is done and you have bled all the air out of the system the valve should reset itself unless it is stuck. If it is stuck you may have to replace the valve assembly if you can't free it up.
99 Durango doesn't have a Heater Control Valve, It only has a thermostat
If you are talking about the IAC idel air control valve,It is as simple as disconnecting the electrical connector from the IAC valve.removing two mounting screws and remove the valve from the throttle body.Installation is reverse.Be sure to install a new O-ring. Good luck!
install updated vent control solenoid valve and jumper harness.
it is a automativ reset control whereby the valve moves at aspeed proportional to the error eliminating the offset
how do install a blow valve on passa 1.8t 99
200*F assuming you have a mixing valve with outdoor reset control.
There is no need to reset it there is way to reset it if the valve is a problem it has to be replaced I think there is another problem but I have no way of knowing what it could be
The heater control valve (HCV) is a very important component to a vehicle's water cooling and climate control systems. The HCV itself for this application can be found inline to the heater core lines.
How to install valve cover to a 97 Nissan maxima.
underneath the rear of the vehicle near the spare tire if i remember right. it is on the side of a black box (evap canister) it is the "vent control valve". it could be other things than just the valve itself setting this code.
Try unhooking the battery for ten minutes to try to reset it, or you have a wiring problem.