Having similar problem
I have been getting several different EVAP related codes. Now I am down to just one and it I can not get rid of it.
P0446 EVAP Emisson Control System Vent Circuit Malfunction
I have tried everything I know to fix it. I have replaced gas cap. I have removed the two Solenoid valves near the service port under the hood and removed the solenoid on the EVAP cannister. Hooked 12V to them all three and made sure the are working. I just don't know where to go from here. I don't understand the CIRCUIT part of this code. I was getting a code that said Canister Vent Control Valve but that one is gone. BTW- This is a 1998 Frontier 4X4.
Thanks in advance,
Last edited by EZstreet; Jun 30th, 2005 at 03:33 PM.