Throwing 0628 and 2509 code

[Kilroy]

Truck keeps throwing 0628 and 2509 codes, cleared with a Scan Gauge II and they come right back.



Replaced the fuel pump 2 weeks ago with a replacement from Geno's. Mechanical fuel pressure gauge shows 7 to 8 psi in regular driving and truck seems to start and run fine.



Have replaced both batteries in last 2 weeks also. Fuel filter was replaced a month ago.

 

[CoastyAV8R]

P0628 Fuel Pump Relay Circuit Low, or Fuel Lift Pump Control Circuit Low

P2509 ECM/PCM Power Input Signal Intermittent



I believe some codes take 50 engine start cycles to clear. Do you have the check engine light (CEL)?

 

[Kilroy]

No check engine light.

 

[CoastyAV8R]

How many times have you started the truck since you replaced the lift pump? If you are having no issues with the truck and its been less than 50 starts, I would give it some more time and see if they go away. You can always get a reflash at the dealer but i'm sure it won't be free. I unplugged my FCA for troubleshooting and the code appeared for quite a while but no longer does.

 

[Kilroy]

It could be less than 50 starts. It would still come back after clearing the code's with the scan gauge II until I get past 50 starts?

If truck is running fine, do I need to worry about these codes showing up?
Looking to leave on vacation in a week.

 

[BIGNASTY]

0628

I think that was the code when my pump took a dive . Didnt know that it would reset its self after however many starts. Live and learn