• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

299 d3 catalyst reagent fault 3516-16

ALUMINOX

Member
Joined
Nov 9, 2025
Messages
5
Location
bahamas
having this error code on a 2021 299 d3
catalyst reagent concentration high-moderate severity 2
any ideas
goes in limp mode after 10 mns
 
Top