Mercedes 2007 GL450 Check engine code PO455

You can do it yourself. No special tool requited.
The P0455 diagnostic trouble code appears when there's a leak in the Evaporative Emission Control (EVAP) system, and the system can't maintain pressure.

[@BROWNMAGIK1]

Hi Victor, Thank you for your video. I have a 2006 ML350 that has the same code and I'm trying to find what the problem is. Did changing the valve fix the problem?

[@focusbvi]

Replacement of rear valve fixed issue, not sure if ML has same. After you clear codes you have to follow instruction how to pass all units...fir example for O2 you have to keep 2k rpms during 2min....etc

[@BROWNMAGIK1]

@@focusbvi could you please link those instructions? I never heard about this

[@focusbvi]

@@BROWNMAGIK1 starting 7:38min ua-cam.com/video/gLnhD4gP0kM/v-deo.htmlsi=0kUC3TtSmE6qCQue

[@BROWNMAGIK1]

@@focusbvi I ordered the valve and replaced it and now the car doesn’t have any codes and I can pass emissions! Thank you so much for the video and help