Hello everyone I NEED SOME HELP.

[Nhramember]

Hi everyone I have been getting code 2343 fuel filter differential pressure DATA VALOD BUT ABOVE NORMAL OPERATING RANGE LEAST SEVERE LEVEL. I have changed the fuel filter 3 times and the code keeps coming back. Has anyone experienced this code. I am trying to find it to solve the problem. I have ran fuel treatments 3times through the tanks . Is there a fuel pressure differential. New code new experience . Thanks Nate

[Bengy88]

Is it only the 2343? It’s not accompanied by a 559 is it?

[Rawze]

What make/model truck?.. make/model engine?. - Maybe some history and if it is de-mandated or not?. Maybe an engine ser#?.

[Nhramember]

I have a 2015 kenworth t680 . It has Cummins isx 15 with 960000 miles . I have replaced fuel pump and tappets in 2022. This started after I put biodiesel in the truck. I ran 3 bottles of fuel injector cleaner thru it. Code keeps coming back.

[Nhramember]

(10-29-2023 )Bengy88 Wrote:  Is it only the 2343? It’s not accompanied by a 559 is it?

[iyes be by it is has 559 inactive under it.[/i]

[Nhramember]

Engine serial number 79759039 Cummins isx 2350

[Nhramember]

Hey It happened again. I’m hoping someone can help me with this. Thanks

[Rawze]

(10-29-2023 )Nhramember Wrote:  Hey It happened again. I’m hoping someone can help me with this. Thanks

you need to get it to pass an injector leak-down test next.:
ref: http://rawze.com/forums/showthread.php?t...3#pid75483

[Nhramember]

Ok rawze will do injector test when I get home to Md . Will let u know the results.