CM 871 Fault code 285

[2dlb]

(04-14-2020 )Brock Wrote:  I just went through something similar because I took my cat out of my 389 and put a 871 in from a prostar. I went to 2 different cummins shops and neither could actually come up with a proper cal file for what my truck should have.

I ended up pulling the file from a fellow forum member so I could have one from a peterbilt with all the switches properly programmed in.

Maybe they put the wrong file in.

Have you hooked up ESA to see if its reading these switches?

Hi Brock, In Insite, in parameters i can toggle the switchs and everything responds or registers so i think its working that way