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Help with fault code 078(7) please

Scv's are brand new from merlin diesel

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Hello Markspark did you ever get to the bottom of this fault?? Have exactly same fault and pulling my hair out trying to solve , I have had extremely bad fuel new scv, pump checked, rail cleaned , tank dropped and gauze cleaned , new fresh good diesel , new fuel filter , mine is 2004 so old 4 pin injectors, I thi I they are my fault but , what fixed yours , any help greatly appreciated, thank you
 
hello, i have same problems did you fint problem? or sombody else now?
 
I also have the exact same problem and have found that techsteam has said it is 078(7) where as 2 other scanners have said a different fault code p1226 fuel line malfunction .
 
Hey guys, I had this fault and the vehicle would nearly cut out when the engine was under load. Took the filter and it was fairly bad even though the filter was changed in the last year. So i decided to drop the tank to see how the sender unit in the tank was. Opened it up and seen the gauze was completely blocked with a gonky build up. Cleaned the guaze, the tank and all the pipes, new fuel filter and it was good as new. Hope this helps someone
 
YYY
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