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+--- Thread: X15 code 3382: EGR data valid but below normal (/showthread.php?tid=10507)
X15 code 3382: EGR data valid but below normal - John Deere Boy - 02-11-2026
Hi, in late December I had the local diesel shop diagnose code 5383, they ran an air handling test which it passed. Then they baked the DPF. It ran for a couple days and then set this current code 3382: EGR data valid but below normal. So far we have:
-replaced EGR differential pressure sensor, EGR temp sensor, IMAP, and intake temp sensors.
-removed and inspected EGR cooler. It looks pretty good, no appreciable soot accumulation
-removed and inspected EGR crossover tube. It also looks pretty clean.
-blew shop air through the exhaust gas pressure sensor tube, seems open.
Right now the truck actively regenerates every 8hrs or so. Occasionally gives me the 3hr derate warning which may or may not be active the next day. I have insite 7.62 so I can't run the air handling test. This truck has a DPF soot level gauge which has ALWAYS read 0, even right before a successful active regen. The logs linked below also show 0% soot load at all times, 0% commanded EGR valve position, 0% measured EGR valve position, and 0 EGR differential pressure.
Link to three .csv logs https://drive.google.com/drive/folders/1OEx04VkvWkzNguTAboAKVTjHm68WJ5Pr?usp=sharing
2019 T680, 480k mi, 13k hrs. I've had it two years. Farm truck. Average trip is 45 miles to the elevator, idle, 45 miles back home. I usually activate parked regen if it's still regenerating when i get home.
Thanks!
RE: X15 code 3382: EGR data valid but below normal - marek4792 - 02-11-2026
On that block where the EGR differential pressure sits, behind the heat shield, there's a pair of plugs that need to be removed to clean the passages on it. Is the file stock to the truck? Was the DPF differential pressure sensor swapped out and tubes cleaned?? Can't imagine you running too far seeing 7 inhg... On a normal system you never want to see more then 3inhg..
RE: X15 code 3382: EGR data valid but below normal - John Deere Boy - 02-11-2026
(02-11-2026 )marek4792 Wrote: On that block where the EGR differential pressure sits, behind the heat shield, there's a pair of plugs that need to be removed to clean the passages on it. Is the file stock to the truck? Was the DPF differential pressure sensor swapped out and tubes cleaned?? Can't imagine you running too far seeing 7 inhg... On a normal system you never want to see more then 3inhg..
Dad took the cooler off while i was driving the other truck, I'll ask him. But he was specifically looking for soot accumulation and blockages while installing the new EGR deltaP sensor and inspecting the cooler.
DPF deltaP...I haven't touched it yet or looked at its tubes. The deltaP values looked a lot better after the diesel shop baked the filter, so no, I haven't barked up that tree yet. Before the DPF bake, the truck was running fine. I took it to the diesel shop because of the derate imminent warning combined with the scary plugged DPF code.
I don't understand your question about a file being stock to the truck?
Thanks, marek!
RE: X15 code 3382: EGR data valid but below normal - Rawze - 02-12-2026
(02-11-2026 )John Deere Boy Wrote: ...
DPF deltaP...I haven't touched it yet or looked at its tubes. The deltaP values looked a lot better after the diesel shop baked the filter, so no, I haven't barked up that tree yet. Before the DPF bake, the truck was running fine. I took it to the diesel shop because of the derate imminent warning combined with the scary plugged DPF code.
I don't understand your question about a file being stock to the truck?
Thanks, marek!
Pull the ERG delta-P sensor off and also its mounting block. Put new sensor on if you have not already, and clean out that block. It likes to get slightly dirty and make the sensor read incorrectly.
Those numbers show that the DPF can is not in good shape. Rem,ove it and the DOC unit, have them professionally baked, de-ashed, and flow tested (NO LIQUID METHODS!!!). / Cleaned at an OEM certified facility.
BTW: you can do 50 parked regens in a row... all it will achieve is about 2-3% cleaner at best. - The regn process on the truck absolutely sucks and it cannot clean those cans very well .. is only there to make it last a bit longer between having them removed (usually every 200k miles or so) to get professionally cleaned. Maybe the place that did it is not too good at what they did?.-- who knows... because after a proper cleaning, etc.. the numbers on that far right column (inhg) should be in the 1.3 - 1.9x range, and the average across all the regens should be below 3.0 overall. - SO... all those numbers in that screen shot look waay to high for a clean, properly running system.
----
What was asked about your program is .. did some idiot 'Uprate' the hp in the engine?. ... this makes for the aftertreatment to act up like mad if someone did not put an exact matching file in it. - You can check it by listing your engine ser# on here, and by checking the program name at the top of the screen (in the title-bar for the window) in Insite while connected and listing it on here as well.. so someone can look it up to see if it matches.
RE: X15 code 3382: EGR data valid but below normal - marek4792 - 02-12-2026
(02-12-2026 )Rawze Wrote: What was asked about your program is .. did some idiot 'Uprate' the hp in the engine?. ... this makes for the aftertreatment to act up like mad if someone did not put an exact matching file in it. - You can check it by listing your engine ser# on here, and by checking the program name at the top of the screen (in the title-bar for the window) in Insite while connected and listing it on here as well.. so someone can look it up to see if it matches.There was a TSB specifically for Paccars on updating the factory file if replacing the old style EGR cooler to the new style. I imagine if doing one without the other would upset things?
RE: X15 code 3382: EGR data valid but below normal - John Deere Boy - Yesterday
The egr cooler is still factory. I took out the EGR deltaP sensor and caps and blew through them. Little bit of soot, no restrictions. DPF deltaP lines are pretty clean. I unplugged the EGR valve, 14 pin aftertreatment crossover, and ECM harness. Contacts look clean. After all that, the EGR valve started working. EGR deltaP is reading 0-0.2 at idle.
But now my turbo actuator is sticking. Going to have to replace it I guess. Active code 5177. Truck isn't driveable now, lots of weird turbo noises when it sticks.