PO443 states that purge contrlo valve in the evaporative emission control system has malfunctioned. This code deals with the fuel emmissions, I have checked for leaks, changed gas cap, any ideas.

 

Most likely a purge valve problem. The valve itself is located above the spare tire on the vapor canister assy. Very suseptible to the elements.

Robbie

 

I changed the valve , reset computer, code came back. All vac lines are good, someone told me the egr valve can cause these codes for emissions to come up. Is this true and if so should I replace valve, or somehow clean it with something

 

P0443 indicates an electrical failure in the EVAP canister purge valve coil circuit. It is completely unrelated to the EGR system. It is also not a problem with the vacuum lines.

Most likely, it is a corroded or damage wire or connector. It is also possible that the PCM has a failure.

Here's the list of possibilities from the service CD:

The service CD has the full diagnostic procedure.

Steve