hi everyone, changed my DPF filters and the next day , I got a check engine light on. No codes until I got to mechanic and he pulled this up. wondering what it might be . He is not quit sure either but its something to do with poor def quality.
I would verify that the DOC inlet temp sensor wasn't damaged and pull the cover off and check for leaks, and that the clamps are situated correctly. It can be tricky in a one box to get the inside front clamp on there properly.