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Kidoo's avatar
Kidoo
Explorer
Sep 18, 2014

What are the scan Codes for the 300HP cummins ISB 2003

Anyone has the codes for the 300 HP ISB 2003? Hi, I just got my scangauge and the codes detected are 42 and 275. I have a site that list the codes for the ISB but those codes are not in. I think th...
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ScottG's avatar
ScottG
Nomad
Sep 19, 2014
First replace you fuel filter and if that doesn't make the code go away then get the lift pump pressure tested.

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