All codes where cleared last week at the dealership after we replaced the DPF Sensor.
Whoa Sir Lancelot !!
OK you have an indication its the differential pressure sensor.
Now with Snappy, switch out of codes , that's for indication only!
GO TO to live data on the tool and see the ACTUAL figures of that sensor at work to prove it.
Look at it in KOEO ,then in KOER at idle then give it some revs record the figures.
At the same time do a comparison of the Exhaust Back Pressure Sensor AND the EBP, nearby on the screen.
What's it showing?
Simply put:- because that EBP sensor easily gets plugged up with carbon and throws the whole thing into a hissy fit AND rainwater dripping off the hood scuttle drops into the socket and shorts it out.!
If its all out of whack now
do the visuals.
The diff pressure sensor is mounted in front of the HVAC intake filter housing.
Remove the 6 mm nut (10 mmm wrench ) and slide it off the stud ,
what is the part number on the label?
Does it have the latest socket & pig tail on it?
The original has the wiring simply hanging down (best descried like limp dick) " hanging" -or does it have a small thin zip tie holding the wiring up just behind the socket? (
That is part of an update or modification to alleviate what you are showing on your screen as a code)
Now follow the 10mm s/s pipes down the frame to the SCR Cat.
Remove the socket from the EBP ,just at the back of the EGR cooler entry housing--Big 22mm hex body with black plug, !
Is the interior corroded?
Are the pipes loose on the Cat connectors or broken off?
So now follow the 10mm s/s pipes down the frame to the SCR Cat.
Now get under the rig and look at the flex exhaust connection fwd of the SCR Cat & DEF dosing valve !
Notorious for breaking and on 2011 to 2013 exhaust systems, the weld is so marginal that it fractures over time slips back allowing a gas leak !
That means a black carbon gas trace --look for it!
If its leaking then you will get reduced gas pressure which "down the pipe" is
recorded as a (low figure/defective pressure fault code.
Clearly from your narrative a dealer changed the sensor , did they do the checking as I aforementioned or just throw parts on it.?
The reason I mention it is because only the other day I/We we got in a 2011 Sprinter with a Cat temp sensor issue ,and an erstwhile local dealer put a new sensor in it, not once but three times over several weeks--to no avail.
And the root cause was they installed all
three consecutive sensors from an AMG S Class . What were they thinking???
As a footnote this procedural is what is outlined by both GM and B/L Landrover/Jag, for servicing techs and its approach to fault finding and problem resolution .
If you short cut it by throwing parts it, it may not easily fix the issue so beware .
Dennis