codes from scanner indicate the emissions system (440,441,443) Does that mean I should replace the purge valve/ soleniod

I have a 2003 Toyota Echo, codes from scanner indicate the emissions system (440,441,443) Does that mean I should replace the purge valve/ soleniod? Is that hard to get to?

Answer:
P0 443 : Evaporative Emission Control System Purge Control Valve Circuit Malfunction ..... this indicates a malfunction in the curcuit. It may be a faulty part, you may have gotten some bad gas, without testing the part there is no way to know that it needs replaced. You may have a vacuum leak. This is an emissions only related issue and in no way will it affect the drive-ability of the vehicle. It is an EPA mandated part of the vehicle. That being said, I would suggest having the light turned off or cleared( has to be done with a scan tool and will not go out on its own, even if you fix the problem) drive it around, buy some good gas instead of the cheap stuff and see if the light comes back on. If it does and it annoys you enough , take it to your local dealer and have them repair it. The test equipment is expensive and most small shops do not have it. You can try changing parts if you want , but this is usually not a good practice to replace parts if they have not been tested as a bad part. It can also get quite costly . And yes it is difficult to get to.