gthegreat1 Posted May 5 Report Share Posted May 5 (edited) Hi, Recently bought Dodge Journey. My gas cap, Engine light came on. P0456, small leak EVAP. I replaced with off brand gas cap and off brand Leak detection pump. Still the same. Didn't check yet the purge valve. I was wondering. I check the fuel tank pressure and i see .99 inH2o. But my fuel tank pressure volts shows NA. Would that cause an issue? I assume the volts have to be there. How can i check? Any wiring diagrams available? Thank you for the forum. Edited May 5 by gthegreat1 Added pics Quote Link to comment Share on other sites More sharing options...
Official Dodge Support DodgeCares Posted May 7 Official Dodge Support Report Share Posted May 7 P0456 typically points to issues like a faulty NVLD pump or a deteriorated EVAP hose. One of the most common causes of the P0456 code are the vapor canister purge valve or Fuel Tank Sending Unit needing service. It is possible for the gasket that attaches the fuel-sending unit to the gas tank to go bad. This can reduce tank pressure and throw the code. However, this is only speculation, and we would suggest contacting your local dealership for a hands-on diagnosis. Should you decide to seek service, reach out to us, and we will do our best to assist. Chris, Dodge Cares Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.