P0455 and P219a after fuel pump replacement

[alvocado]

I'm getting two codes one month after a shop replaced my fuel pump, p0455 and p219a. Truck has 203k miles and no other issues. This was the second pump in 3 mos after the first pump had a defective sending unit. The shop is using a Delphi unit.

 

With an evap leak and fuel trim imbalance, does this likely point to the pump (fuel vapor hose, seal at the top of tank, etc?) I'll schedule a return with the shop but want to make sure they aren't recommending fuel injectors or other parts when this is pointing to a pump installation issue. I ran live diagnostics and didn't see any issues with fuel trim levels, no misfires, etc. 

[asilverblazer]

I struggle to see how those two codes are related.

 

The shop needs to look at p0455, likely the work disturbed something. Not saying it is their responsibility or they screwed something up, age and mileage are probably the culprit cracked line...

 

Try to resolve the other issue after.

[Bleepster]

try something easy - like a new gas cap for the p0455 code?

[alvocado]

Confirmed: evap line on top of fuel tank had a loose connection after the pump replacement. Tightened connection, no faults. 

[asilverblazer]