P0446 2005 Toyota Prius -

Question

I'm also getting the codes po441 and p1121. I had a warning light come on during the very cold winter weather when I had the heater on. My mechanic couldn't fix it, but when the weather improved I didn't have the problem anymore. Now with the warm weather, when I use my air conditioner I have a light come on.

Answer 1

P0441 Evaporative emission system incorrect purge flow

P1121 Coolant flow control valve position sensor stuck

P0446 Evaporative emission control system vent control circuit

When ever you have a incorrect purge flow , what follow is the evaporative emission vent control code. Right at the aircleaner is a hose that the purge valve needs to create a purge, this purge hose tends to get knock off during a airfilter change, if it is disconnected just reconnect. As for P1121 this is the coolant control valve this is a straight foward code, you need a coolant flow control valve.