Join Date: Sep 2016
Location: Not in Boise but nearby.
You have come up against the very reason that deletes are so popular. If it all worked properly and was easy to fix when it didn't work then there would be a lot fewer deleted vehicles on the road.
It isn't necessary to remove a DPF to clean it. The ECM will set the P2463 code if it thinks there is more than 70 grams of soot in the filter. Before that it will do a cleaning cycle to try to purge the soot. A regen is typically done when the soot level is 30 grams or more. Apparently your truck has been FUBAR for a while. The grams of soot are a calculation, not a direct measurement. That means it is an educated guess, nothing more.
Part of the calculation for soot load involves the pressure differential between two sensors in the exhaust but you don't have a code for that.
If the DPF is cleaned off the vehicle, and I don't know how that would be done, then the ECM would not know that the soot had been removed. It would be necessary to reset the soot count with a scanner to return it to 0 after an off the truck cleaning. Again, I don't know how you would do that. That is something that would happen with a tune after the DPF had been deleted, not a normal service item.
The only DPF cleaning I have ever heard of happens when a scan tool is used to force the ECM to do a regen on the truck with the engine running. To do that the equipment involved in a regeneration has to be working properly.
Code P113a indicates that the readings between the exhaust temp sensors is not realistic. There is a sensor in front of and behind the DPF. There is also one in front of and behind the catalytic converter but you don't have a code for those. If one of the sensors is bad then it would set this code and the regen cycle would not run. That would lead to excessive carbon buildup in the DPF. Code P113a indicates a difference in reading between EGT sensors 3 and 4 (the ones for the DPF) of 54 degrees F at startup when the engine has been off for more than 8 hours. Under those conditions the two sensors should read the same so a difference of 54 degrees would mean one of them is bad.
Code P2471 indicates that EGT sensor 4 has a high resistance, often an open circuit meaning that the sensor is burnt out or the wire is broken or disconnected. It can also indicate a short to voltage but let's hope it isn't that because that can kill the ECM too.
Don't tell me you don't have a scanner. With all of the money you have put into this repair a good scanner is cheap by comparison. With a good scanner you will know what is going on, not having to rely on what others tell you. I think the independent shop you went to sold you a bill of goods. Find another shop.
You have an extra fuel injector in your exhaust system that injects fuel into the exhaust stream to make it hot enough to burn up the soot in the DPF. The P2047 code indicates that the computer controlled circuit to that injector is bad. It could be a bad injector or bad wiring. This would also prevent the system from cleaning itself and set the P2463 code. With this code the shop you took your truck to could not possibly have run a regeneration on the DPF on the truck.
So it looks like you have a bad EGT sensor #4 and a bad exhaust injector, not to mention a bad mechanic. You need to properly diagnose the first two problems properly and then replace the sensor, injector and/or wiring. Avoid the third problem entirely.
Last edited by mizterwizard; 07-16-2019 at 03:09 AM.