Exhaust system P2002 code
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4wd Low
Joined: May 2023
Posts: 10
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Exhaust system P2002 code
My 2017 f-450 6.7 105kmiles has a P2002 code but will regenerate from 100% to 0% with no problem, either driving or sitting at 2000RPM. Truck runs fine, what is the best route to trouble shoot this problem?
Lead Driver
Joined: Jan 2010
Posts: 6,600
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How often (miles) does the active regeneration run?
What do the exhaust tips look like? Clean or maybe a little gray ash or black from diesel soot? If some diesel soot, my thoughts here is a failure in the substrate (cracked filter).
If clean exhaust tips and since active regenerations are completing, maybe the beginning of too much ash buildup in the DPF since it's an efficiency issue?
For P2002, it generally means (according to documentation) the PMS (particulate matter sensor), EGT, ECT, MAF, NOx and IAT sensors are status "Ok."
What do the exhaust tips look like? Clean or maybe a little gray ash or black from diesel soot? If some diesel soot, my thoughts here is a failure in the substrate (cracked filter).
If clean exhaust tips and since active regenerations are completing, maybe the beginning of too much ash buildup in the DPF since it's an efficiency issue?
For P2002, it generally means (according to documentation) the PMS (particulate matter sensor), EGT, ECT, MAF, NOx and IAT sensors are status "Ok."
Super Moderator
Joined: Aug 2008
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From: Frederick, MD
so I think you are all out of warranty. But ask for some help with Ford. Be sure they check for any TSB or anything that may apply.
Be advised the DPF and SCR are one piece so therefore, around $3500 bucks last time I checked. Plus labor.
Be advised the DPF and SCR are one piece so therefore, around $3500 bucks last time I checked. Plus labor.
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4wd Low
Joined: May 2023
Posts: 10
Likes: 1
I will go to Ford and ask a few pertinent questions concerning the possibly cracked substrate in the infamous DPF and possibly testing the sensors in question. Then being assured that the DPF is cracked, its off to the bank! A 4 to $5,ooo bill every 100k is somewhat daunting at best. Thanks for your input concerning my trucks trouble, I will let you all know what develops.
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Lead Driver
Joined: Jan 2010
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Likes: 84
Yes, technician troubleshooting is needed to be sure since the DOC/SCR/DPF is an expensive piece of hardware. From my armchair, I think it's a failed DPF based on what you've described. To clarify and to my understanding, the sensors I listed are fine because those checked out Ok within the 10 minutes monitoring duration for DPF efficiency checks so the code (programming) triggers the P2002 based on the results otherwise you would have a different or additional DTCs.
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