P0443 Purge Valve or Gas Tank Cap to change?

[bosanci28]

i am starting to get this code p0443 ,for about a month now,i have reset it few times,but stills comes back! on my 2003 x5 4.6is , i did some reading and you think this is coming from the gas tank cap? or the purge valve?


thanks in advance for any clarification!

regards,
misu

[upallnight]

To cause a P0443, there has to be a problem with the purge control CIRCUIT, not necessarily the valve. Usually they are a unit housing the valve and the solenoid as an assembly. Or it could be comprised of a separate solenoid with vacuum lines to a purge valve. That said, it could be any of the following: Bad purge solenoid (internal short or open) Wiring harness chafing or rubbing another component causing short or open on control circuit Connector worn, broken or shorted due to water intrusion Driver circuit inside engine control module (ECM) is bad.