2019 Ram 2500 104689 miles. Went into regeneration mode, then engine light came on. DPF guage read 0. Truck runs great now better mileage. DPF gauge is now 35% after 80 miles ofdriving. Code scanned P2459 Particulate Filter Regeneration Frequency , Bank 1. Will the engine light clear once it regenerates again? Any suggestions?
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P2459 Code
- Thread starter Kman
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flan
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The code means your truck has been regening too often. Sadly it will continue to do so based on previous posters with the same issue. I’d find a scan tool capable of forcing a manual regen if that does not work DPF probably need replaced.