Check engine light P0440 and P0457

[alanharig]

Gas cap light is on and will not stay off even with 2 new gas caps.

CEL on for P0440 and P0457. It is emissions related, but apparently NOT gas cap.

Cleared codes, the come back in 15 minutes

took battery terminals off for hr codes returned, but not for a couple days

EGR ???

 

[tron67j]

Many threads on these codes, do a search

Three different codes - P0440 - P0456 - P0463

So just recently over the past few weeks I have had three codes come up. P04440 - P0456 and last night P0463. I’m not too worried about them because the truck still runs and drives fine and based off what I have read it won’t do any long term damage. I clear the codes and it’ll go probably 5-7...

www.ramforum.com

 

[EdGs]

Mine was the ESIM down by the fuel tank.

 

[Burla]

Do you top off all the time??

 

[Wild one]

Gas cap light is on and will not stay off even with 2 new gas caps.

CEL on for P0440 and P0457. It is emissions related, but apparently NOT gas cap.

Cleared codes, the come back in 15 minutes

took battery terminals off for hr codes returned, but not for a couple days

EGR ???

You don't have EGR on your 14 with a 5.7,that went by the wayside when they brought in VVT (variable valve timing) in 2009

 

[David H]

Gas cap light is on and will not stay off even with 2 new gas caps.

Yeah, do a search. Pretty common.

2009-2019 RAM 1500 P0456 P0457 EASY FIX - Fuel Vapor Leak Detection Pump (ESIM)

If you have a 2009-2011 RAM 1500 with a check engine light throwing codes P0456 and/or P0457 the problem is likely your Fuel Vapor Leak Detection Pump, other...

www.youtube.com