fuel filter does not cause the light to come on.
Now as to you question, not enough information, to even want to guess. the 10, 20 items that could cause the light on. Well, there are a lot less. You should get your CAT manual and see what would cause the lite to come on. They are all documented with CAT or Freightliner.
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Dale&Susan, 08 Alfa Gold, DaGirlsRv Blog
2015 F-150XLT_2000W Solar_800 AmpHr Lithium
Magnum_MSH 3012 & PT100
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