How much we know about DPF - P2002 code?
11-25-2017, 01:03 PM
#1
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1922 Ford Model T / no OBD
How much we know about DPF - P2002 code?
I have code popping up on my E250 and after replacing 2 sensors it is not going away.
Everybody is telling me that the DPF should burn/clean itself up on long drive, but we just did two 600 miles trips and it is still coming back.
My TorquePro is showing me some DPF pressure and temperature, but temperature stays at about 100F all the time, so I don't know if I don't have the sensor, or sensor if faulty.
What I see the single exhaust is having 4 sensors, so not easy to diagnose and at $300 a piece, replacing sensors at random can get pretty expensive.
Any tips what numbers should I observe to troubleshoot the issue?
At this point I don't even know what bulge is my DPF and internet catalogs show totally different exhaust with my VIN.
WDDHF0EB7EA928505
Everybody is telling me that the DPF should burn/clean itself up on long drive, but we just did two 600 miles trips and it is still coming back.
My TorquePro is showing me some DPF pressure and temperature, but temperature stays at about 100F all the time, so I don't know if I don't have the sensor, or sensor if faulty.
What I see the single exhaust is having 4 sensors, so not easy to diagnose and at $300 a piece, replacing sensors at random can get pretty expensive.
Any tips what numbers should I observe to troubleshoot the issue?
At this point I don't even know what bulge is my DPF and internet catalogs show totally different exhaust with my VIN.
WDDHF0EB7EA928505
11-25-2017, 02:09 PM
#2
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I don't have much experience with newer diesels but searching the code properties seems to indicate that the efficiency of the dpf filter is below some threshold. Regeneration cycle may not improve the flow after some time. Enough of soot accumulates and blocks it.
my next step would be to pull the filter off and if possible I would use pressure washer and spray a lot of water in the direction OPPOSITE to the normal flow so that you don't block it more.
it seems that hot water and big water pressure what does the trick. Perhaps there are chemicals you can use to soak it over night. Not sure.
my next step would be to pull the filter off and if possible I would use pressure washer and spray a lot of water in the direction OPPOSITE to the normal flow so that you don't block it more.
it seems that hot water and big water pressure what does the trick. Perhaps there are chemicals you can use to soak it over night. Not sure.
11-25-2017, 03:08 PM
#3
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1922 Ford Model T / no OBD
The problem I have right now is that I can't determinate if my filter is clog, or too open
Car performs very well, delivering unbelievable mpg, so I tend to assume the 2nd, especially that I can wipe some sot from tailpipe. 175k miles, so the thing might have right to wear.
That is why I am trying to figure how much I can conclude from reading the pressures on my TorquePro.
Car performs very well, delivering unbelievable mpg, so I tend to assume the 2nd, especially that I can wipe some sot from tailpipe. 175k miles, so the thing might have right to wear.
That is why I am trying to figure how much I can conclude from reading the pressures on my TorquePro.
Last edited by kajtek1; 11-25-2017 at 03:12 PM.
11-25-2017, 06:11 PM
#4
Senior Member
Can you scope the DPF with a camera via one of the sensor bongs? Not sure how easy it is to pull the DPF off but perhaps access to Xentry or equivalent would be of help. I'd be inspecting the cats too. Looks like you're in for some quality time under your vehicle...
11-29-2017, 03:22 PM
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1922 Ford Model T / no OBD
Camera idea sounds interesting, but my sensors are on pipe ends, so don't know how much I will be able to see. That will take some time before I get to it.
In the mean time I was driving with TorquePro showing some readings.
When exhaust pressure operating in single digits and peaking at 40 psi seems plausible, there is no way my DPF would hold 1000 psi the Torque did show at peak.
So much for that idea.
In the mean time I was driving with TorquePro showing some readings.
When exhaust pressure operating in single digits and peaking at 40 psi seems plausible, there is no way my DPF would hold 1000 psi the Torque did show at peak.
So much for that idea.
