PO456 code 2019 5.7 Ram Rebel

[Ghost_Rebel]

Anyone know know what to do about a PO456 code . Small evap leak. I have already replaced the Evap Leak detection valve and the purge valve and still get the check engine light. I first replaced the leak detection valve about 10 months ago and the light cam bac on so i replaced the purge valve. This does not have a gas cap...so whats next!!

 

[Richard320]

Try putting one of these on the filler neck and see if the light stays off. If it does, it means a bad seal inside the filler neck. You shouldn't need the clamp

 

[Ghost_Rebel]

Anyone know know what to do about a PO456 code . Small evap leak. I have already replaced the Evap Leak detection valve and the purge valve and still get the check engine light. I first replaced the leak detection valve about 10 months ago and the light cam bac on so i replaced the purge valve. This does not have a gas cap...so whats next!!

Try putting one of these on the filler neck and see if the light stays off. If it does, it means a bad seal inside the filler neck. You shouldn't need the clamp

Thank you yes makes perfect since!!

 

[Montana_]

I bought a cap for mine, here is the link for an option to check this out (although, I'm sure you can get something cheaper from a local hardware store).

 

[Ghost_Rebel]

Try putting one of these on the filler neck and see if the light stays off. If it does, it means a bad seal inside the filler neck. You shouldn't need the clamp

 

[Ghost_Rebel]

Try putting one of these on the filler neck and see if the light stays off. If it does, it means a bad seal inside the filler neck. You shouldn't need the clamp

So trued the cap light came back on tiday!!

 

[Ghost_Rebel]

Try putting one of these on the filler neck and see if the light stays off. If it does, it means a bad seal inside the filler neck. You shouldn't need the clamp

So I tried the cap you sugested light came back on today