P0456 Code

[Hanover Fiste]

My 2005 has had the P0456 code for a few years. I wasted a lot of money by installing all new parts except for the hoses, which are no longer available.

The codes persisted, so I built a smoke machine and discovered there is a leak somewhere on top of the fuel tank. I haven't dropped it yet, as the truck runs just fine.

 

[wallacemf]

Father in laws truck has this code still to this day. Smoked at a semi trust worthy dealer and found that something is cracked or broken on top of the gas tank where lines and stuff connect. Supposedly needs a new gas tank because nothing is serviceable. What a PITA. I shared a post awhile back on it. He doesn’t have $1500 sitting around throw a new gas tank under it, bad design IMO, truck is a 2016 with 80k miles. I hope it doesn’t happen to mine.

You might look into this further. My 2018 2500 was throwing this code. Turns out a rodent had chewed through one of these lines on top of the tank. I just replaced the bad section with some vacuum line, it’s been fine since.

 

[briantmustang]

So I went through several ESIM’s before buying a Mopar part and that makes a difference. This last time for me it was the purge valve. I ordered one online and it took me about 10 minutes to replace it and that’s only because I don’t have good eyes and was being careful. It’s more like a 5 minute job for most.

I purchased the ESIM and it was a standard brand part and I already replaced the purge solinoid valve. I will buy the mopar ESIM and see want happens.

 

[GTyankee]

2018 Ram ESIM stock part was either a

STANDARD MOTOR PRODUCTS LDP12
EVAP System Integrity Module (ESIM)
or
WVE 4B1593

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