Regen question
06-09-2021, (Subject: Regen question ) 
Post: #1
Regen question
   Had a dpf filter plugged up,cleaned and did the imap,delta p,and dpf deferential pressure,sensor,the dosser 1 injector was replaced less then 50k(so fairly new), problem is getting a code 2639 spn 3251 Fmi 15, and when hooking up isite and do a forced regen my temp are in the negative, any input would be helpful as to where to look next
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06-09-2021, (Subject: Regen question ) 
Post: #2
RE: Regen question
when the dpf and doc were cleaned the temp sensors were disconnected. I would start by checking those connections, maybe pull out a multi-meter and check voltages and such. That would be my first step. Also, in Insite - Data Monitor you should be able to see what the ECM sees for sensor voltage readings. Could be bad wires, bad connection or maybe even a bad sensor. Quickserve should have step-by-step troubleshooting steps for the code.

Next step is to figure out WHY the dpf got plugged up. Bad sensors/readings, especially temp sensors, could be the cause resulting in bad regens or no regens. Or it could be something else and this sensor is just a fluke.


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 Thanks given by: Rawze , Tqr6
06-10-2021, (Subject: Regen question ) 
Post: #3
RE: Regen question
What jumps out at me is all 3 read exactly the same. That is impractical as you could drop those 3 sensors into a bucket of water and they'd all show a different temperature within a few degrees.

That -37 seems to me to be a default temperature. I'd definitely check the plugs for corrosion, the wires for evidence they were crushed/pinched or shorted together.
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 Thanks given by: Rawze , Tqr6
06-11-2021, (Subject: Regen question ) 
Post: #4
RE: Regen question
What are the odds the junction box has gone bad,checked the wires all seemed fine?,pulled these codes ,no cel just the flashing parked regen,bare with me gentlemen I’m still learn how to use insite and quickserver


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06-11-2021, (Subject: Regen question ) 
Post: #5
RE: Regen question
Unplug one at a time. Maybe one is bad and pulling all the others high?
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 Thanks given by: Rawze





  
  
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