There's also inactive 5031 fmi10.
Is this likely to be athe outlet nox sensor or wiring or is there something else I should be checking. It is in derate. Only other code active is 1569 fmi 31.
Replaced everything DPF, injectors, sensors etc 18 months ago.
Spn 3226 fmi 4&10 and spn 5246 fmi 0
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Tknflorida, Jul 30, 2025 at 1:42 PM.
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