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Re: 2012 Cummins ISL9 code 2387
Posted to HD/Fleet Forum on 3/8/2017

There was a message saying that they were expanding QSOL, but that it was functioning correctly.

I just logged in again, no issue.

Keep trying, That TSB refers to a service actuator. I didn't read all of it.

There is also a description of the code and it... Login to read more.