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There should be a switch to manually actuate it, but it'll only respond to this switch when the regen light is displaying on the dash - that means it needs it. The other way is to obtain the Cummins Insite software, connect to the ECM, go to "ECM Diagnostic Tests", choose "Diesel Aftertreatment System Regeneration", and follow the prompts from there.

The only way to force a regen event is with a scan tool.

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9y ago
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Q: How do you manually regenerate the DPF on a Dodge Ram 6.7?
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