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Kenworfth Exhaust (SCR/DPF) service required
Posted to HD/Fleet Forum on 4/29/2019 4 Replies

Had a Kenworth with an ISB with frozen DEF codes. Replaced DEF tank coolant valve and #1 heated line. All codes went inactive and was able to regenerate truck.

Exhaust (SCR/DPF) service required still indicated on dash with no CEL or codes in ECM. Is there a... Login to read more.

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