6430 problems

[KRM197638]

When I start to work my 6430 the engine protection light flashes and beeps, was told water in fuel would make it do this, but I changed filters and didnt see any
water, and it still does it. Any ideas? Thanks

 

[DAVISFARMS]

Are there not like 3 filters 2 cans and an inline,could also be braided fuel lines..I once fixed a 6420 that way that missed and threw codes

 

[FFF]

A 6430 is a "drive by wire" computer controlled machine. Buy a code reader or ask the dealer to read the computer. I do not mean to be fresh but your light could mean something as simple as not wearing your seat belt. Some of us complain about computers making these machines difficult to work on but these computers allow a truck to run 150k with out a tune up. The code will answer your question, don't throw parts at it or guess.