Originally Posted by miller587
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:
Diagnostic Trouble Code (DTC) P0443 indicates a failure in the EVAP canister purge valve circuit.
-- VPWR circuit open.
-- EVAP canister purge valve circuit open.
-- EVAP canister purge valve circuit shorted to PWR GND.
-- EVAP canister purge valve circuit shorted to VPWR.
-- Damaged EVAP canister purge valve.
-- Damaged PCM.
The service CD has the full diagnostic procedure.