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  1. H

    EXT SYSTEM warning light, please help!!

    I will definitely give that a shot. Thank you!
  2. H

    EXT SYSTEM warning light, please help!!

    Hello, first post here, really hoping to find some helpful advice... While checking the fuses in the box behind the cab of my 2016 NPR HD I inadvertently pulled the fuse for the SCR (selective catalytic reduction). Now, even with the fuse reinstalled, I’m getting a warning light on the dash...
  3. H

    EXT SYSTEM warning light, please help!!

    Hello, first post here, really hoping to find some helpful advice... While checking the fuses in the box behind the cab of my 2016 NPR HD I inadvertently pulled the fuse for the SCR (selective catalytic reduction). Now, even with the fuse reinstalled, I’m getting a warning light on the dash...
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