I have a P-0440 engine code for the evap system. I have replaced the gas cap with a new locking one and in one of the answers on this site for the same problem you indicated that it could be a malfunctioning vent valve. What is this and where is it located so that I can replace and get this code out of the system.
have the same problem?
Tuesday, August 30th, 2011 AT 2:45 PM