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Code 4796 fmi 31 - Tinytink72 - 04-30-2023
Does anyone have suggestions for what to do with this code? It appeared after doing regen. The truck is a 2019 international lt625
RE: Code 4796 fmi 31 - SquareOne - 04-30-2023
(04-30-2023 )Tinytink72 Wrote: Does anyone have suggestions for what to do with this code? It appeared after doing regen. The truck is a 2019 international lt625
Fault code - 1664
Lamp color - Amber
Definition - After-treatment 1 Diesel Oxidation Catalyst Missing - Condition Exists
This is the definition according to Cummins quickserve. Whats the mileage/hours on the engine? We'll need more info on the truck and it's application to help further.
RE: Code 4796 fmi 31 - Rawze - 04-30-2023
start with a thorough EGR tune-up and ensure there are no exhaust leaks etc.
Things like replacing the IMAP sensor, Cleaned out the EGR piping and valve.. replaced the EGR Delta-P and other related sensors?
Anyone bother to clean the Doser Injector tip and inspect it for seepage?
How about mileage, etc?.. what kind of mileage is on those DOC/DPF cans? . When is the last time someone pulled them off and had them baked, de-ashed, and flow-tested?
-- Its called preventative maintenance for a reason. The DPF system does not make soot... it collects it. You must service the engine by doing tune-up work to it in order to keep those exhaust systems happy.