Trouble finding a part for my truck

Nah I think I fixed it. Had a guy clean out all the connecters to the sensor and we will see if the codes come back. I don't have issues with the DEF system itself. Filter is still showing clean. Gets only boxed DEF fluid and I dont idle the truck much. Have only around 400 hors idle time so far.

I am getting another code I cant find what it is anywhere. Can anyone help me find out what it is before I take it to the stealership? Code is N02A3

 

Google is giving me nothing. I can't find any code at all that starts with an N. If you change the N to a P on google you get "Cylinder 3 Fuel Trim at Min Limit" I am guessing something wrong with an injector.


I'm not worried about the fuel pump. I noticed the posts I come across that have truck's fuel pump fail and destroy the engine were around 30k mile mark.
Closing in on 2 years and 120k miles trouble free on my truck up till now. Not so bad reliability wise I think. I don't think what I have going now is a big issue. It happened after a deep freeze and tons of snow and the truck sat untouched for 2 weeks.

 

If thats what it is then I guess cleaning the connecters didn't fix it.
Need to find a capable mechanic near me. Not sure my guy would be able to do this.

 

Ordering a brand new m2 106 but It will only be ready in October and then however long it would take shipshe trailers to upfit the haul and tow bed. Have to keep my truck running till then.

The 3 codes I had went away and are not coming back after I cleaned out the particulate matter sensor's electrical connections. Only one code keeps coming back now and that's the N02A3 which I can't find what it is. Someone on another thread mentioned that maybe the keeptruckin is reading it wrong and it might be U02A3 actually which means "Lost Communication With Particulate Matter Sensor Module" which sounds plausible.

I'll figure it out. Truck runs like a champ other than that.