Weboct 5, 2022 · it did end up being low quality def fluid, flushed tank and it fixed the problem. Webfeb 6, 2024 · usually def injector or nox sensor failure. Covered under emissions for 5yrs/3000hrs. Webapr 28, 2019 · i have a cat 299d and the def module has fried. Cat cannot find a replacement part anywhere in the world apparently. Has anybody done or know how to. Webfind everything you need for your cat 299d2 / 299d2 xhp from parts manuals, reference guides, maintenance kits, financing your repairs…