2008 prostar fault code 1993

This code is hard to clear on purpose. Get the engine up to temp and then hold it at max rpm for at least 30 seconds. This should set the code inactive.

 

Yes I know, it can't rain every day, LOL!

 

I had the same problem after I replaced my dpf differential pressure. it turned out I'm a idiot and put the 2 hoses back on backwards although I was sure I didn't. ... wasn't my finest hour.

 

Where are the hoses located I’m having the same issues..

 

right on the dpf filter, there are 2 metal lines running from the filter assembly... 1 from the front and 1 from the back which measure the differential pressure of the doc/dpf.
they both run up to a black box about 3"x3" with the last few inches of line turning from metal to rubber.

 

Thanks... what would be the name of that black box Incase it’s a bad sensor? Is it differential pressure tube

 

I found out the name thanks for your help I’ll let you know what happened. I just replaced new Dpf/doc filters and I’m still getting the fault code 1993 that the filters are missing