Cm871 codes 2961 2764 4214

[Waterloo]

I pulled the codes for you here, https://quickserve.cummins.com/info/index.html

You can go there and register, you will need your engine serial number. You can pull codes and all sorts of stuff over there, from manuals to how to fix things, troubleshoot and parts, all free!

Here are your codes. Looks like you have a soot monster on your hands. I will wait for the experts to come on board to diagnose. But at least we have the codes sorted out. And, it looks like an EGR tuneup is in your future, along with the Doser replacement. And you will need a Pyrometer Gauge too if you do not have one. Rawze has a video on how that is all done. Looks like you have a Trubo Boost Gauge, or were you reading off of Insite? If reading off of Insite, get a Turbo Gauge installed too.

2961 = Exhaust Gas Recirculation Temperature - Data Valid But Above Normal Operating Range - Least Severe Level

2764 = Exhaust Gas Pressure 1 - Data Valid But Above Normal Operating Range - Moderately Severe Level

4214 = Aftertreatment 1 Diesel Oxidation Catalyst System - Data Valid But Below Normal Operating Range - Moderately Severe Level