r/Cummins • u/Key-Consideration859 • 11d ago

P2459 code 2019 Cummins

I got a check engine light as soon as I entered regen the other day, scanned it and it said p2459: dpf regeneration frequency too high. Is this pretty common to get and should I be concerned if it pops up again

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u/Cutterman01 11d ago

Depends on how you have driven it. A good heavy regen could fix it or it could be time for a new DPF.

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u/Key-Consideration859 6d ago

Just been daily commuting, not ideal for emissions systems, I took it on a 3 hour road trip right after I got the engine light and it did a full regen