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Re: Cummins SCR code 5655
Posted to HD/Fleet Forum on 10/6/2020 1 Reply

X2 what Rick said.

If your SCR has NH3 sensor you will likley need to replace it to updated 2 bung. Replacing both NOx sensors along with it.

If your unit is under 5yr 100k is should be covered under emissions warranty.

New software will have to be insta... Login to read more.

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