eng 1 spn 3464 fail 16

I will definitely do this, will change sensor just to see how much soot it has, oh yes I definitely hate those lights on the dash! My truck is like yours, running fine, so I’ll run it like that as well. Yes this code seems to be something minor. I thought it could be my turbo at first but I have no symptoms of a bad turbo. I know freightliner would automatically assume bad turbo. Haha
what do you use to erase code? Or does it go away with a few ignition cycles?

 

Well I got couple things It should go off when fixed. But I bought OTR Proformance tool to clear coads and do forced regen been a life save. I saw all these post about problems with def system although at the time I had no problems I wanted to be proactive when I hit 800,000 this thing saved 3 different time. I also have diagnostic tool ai got off Amazon about the only thing it's good for is cleaning coats but works I forget the name of it

 

I will definitely buy this OTR performance tool, I hear it’s a life saver. I had issue with DPF filters and fortunately I was able to make it to my local mechanic here in Laredo, TX but I did get engine derate, I wish I had this OTR tool back then. But will def look into it now. Thank you so much for the advice!

 

Changed MAP sensor and still getting the light as well. So it’s not the sensor

 

Bought scanner from Amazon and been running like that with code on I’ll erase it every once in a while I seriously don’t know what is causing this....

 

DO you by chance run keep trucking ELD? I got that shortly after I started running them wanted to see if there was a connection. I usually get it back within 30 mins of clearing it. But I haven't tried running it without the eld plugged in

 

So that's what they found on yours was the egr valve wasn't closing or opening?