P026D - The saga continues

[Deleted member 54903]

Several months ago I posted about my repeated problems with P026D on my Eco. The problem continues to this day despite 2 ECM replacements, a fuel pump replacement, several sensors being replaced, fuel flow at the injectors being tested (the code is for over fueling at the injectors), the body controller being updated, and the power distribution module (fuse box) being replaced. This all started around 50,000 miles and it now is at 60,000 miles. It has been to three dealerships, the first two were worthless, the third one I believe is trying hard to figure it out and they have not charged me a dime for all of this work that's been done. The first two dealerships claimed my problems were not under warranty.

It had been tripping around twenty miles after a reset but when I got it back a few weeks ago (after the majority of the work I listed was done) it made it to 520 miles, then 270 miles, then 20 miles, then 1200 miles. Now it's back to tripping every 18-22 miles.

I love the truck but I'm at my wits end. I'd jokingly say I'm going to put black tape over the light but when the light is on the remote start won't work.

Does anyone know of a place that could install a custom program on my ECM that would eliminate this problem? I know there were a few places capable before all of the emission delete crackdowns started but I am not familiar with any currently. Google comes up with a few suggestions but nothing I'm seeing as a custom program to solve nuisance codes.

P.S. the vehicle does not qualify for the Lemon Law in Georgia for several reasons.

Thanks

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[obrianmcc]

You might check out the "Unwinding Roads" Youtube channel ... he worked with a company up in BC on his Eco. if anything they might be able to suggest a solution.

 

[rharr]

do you have any aftermarket mods like fenders or anything else that may have touched a wire.

 

[PuddleJumper]

Several months ago I posted about my repeated problems with P026D on my Eco. The problem continues to this day despite 2 ECM replacements, a fuel pump replacement, several sensors being replaced, fuel flow at the injectors being tested (the code is for over fueling at the injectors), the body controller being updated, and the power distribution module (fuse box) being replaced. This all started around 50,000 miles and it now is at 60,000 miles. It has been to three dealerships, the first two were worthless, the third one I believe is trying hard to figure it out and they have not charged me a dime for all of this work that's been done. The first two dealerships claimed my problems were not under warranty.

It had been tripping around twenty miles after a reset but when I got it back a few weeks ago (after the majority of the work I listed was done) it made it to 520 miles, then 270 miles, then 20 miles, then 1200 miles. Now it's back to tripping every 18-22 miles.

I love the truck but I'm at my wits end. I'd jokingly say I'm going to put black tape over the light but when the light is on the remote start won't work.

Does anyone know of a place that could install a custom program on my ECM that would eliminate this problem? I know there were a few places capable before all of the emission delete crackdowns started but I am not familiar with any currently. Google comes up with a few suggestions but nothing I'm seeing as a custom program to solve nuisance codes.

P.S. the vehicle does not qualify for the Lemon Law in Georgia for several reasons.

Thanks

have you tried replacing/ cleaning out the fuel tank. you can swap all the shit you want but if you ever got contaminates, dirty fuel, the tanker liner deteriorating, etc. It'll clog ur fuel system in no time and throw that code. Its a common issue on ram diesels i see all time. just my 2 cents

 

[Deleted member 54903]

have you tried replacing/ cleaning out the fuel tank. you can swap all the shit you want but if you ever got contaminates, dirty fuel, the tanker liner deteriorating, etc. It'll clog ur fuel system in no time and throw that code. Its a common issue on ram diesels i see all time. just my 2 cents

I (they) have not. The problem is overfueling, not underfueling so I doubt a restriction from a contaminant would be the culprit. I sure hope things aren't deteriorating already at just over a year old. They tested the fuel flow and it was within parameters, it's only the computer claiming it isn't Mileage has not suffered at all. The truck shop I own does all of the service so I know there are always fresh, quality filters installed. I've seen stranger things happen though so I will mention it to them when I drop it off again. Thanks

 

[Deleted member 54903]

do you have any aftermarket mods like fenders or anything else that may have touched a wire.

I did replace the inner fenders but the dealer traced all the cabling before they decided to replace the ECM and PDM for the second time

 

[PuddleJumper]

I (they) have not. The problem is overfueling, not underfueling so I doubt a restriction from a contaminant would be the culprit. I sure hope things aren't deteriorating already at just over a year old. They tested the fuel flow and it was within parameters, it's only the computer claiming it isn't Mileage has not suffered at all. The truck shop I own does all of the service so I know there are always fresh, quality filters installed. I've seen stranger things happen though so I will mention it to them when I drop it off again. Thanks

yeah thats the crazy thing. it isn't necessarily over fueling so much as higher pressure than expected. if your pump is working overtime to make up for a partial blockage. the system will opt for too much rather than not enough. so your fuel rail/injectors will be sitting at higher pressure than needed just to cover its bases. but that's what throws the code. basically think pressure washer vs hose. the fuel pump don't care, he's doing his damn job come hell or high water. same flow rate, much higher pressure. the only difference, the hole your shoving the liquid through. so you got injector pressure before the injectors, at least thats how i read it.

 

[@californiajeeping]

Call ecodiesel owners Canada order a stage 2 and specifically request this code removed. Send them one of the ecus that was removed. Done deal.

 

[rharr]

I did replace the inner fenders but the dealer traced all the cabling before they decided to replace the ECM and PDM for the second time

Ok, there have been reports here of people doing fender work and said work has cause some wires on the passenger fender side to now rub on things that didn't before and create odd shorts.

 

[Lost1wing]

I had a p026d on my Duramax. It came with a shorted nox2 fault. Fixed the nox2 fault and the p026d never came back.

While researching the p026d on my Duramax, I saw several map sensor replacements and or cleaning that also cured the p026d. I haven't seen anyone mention that on the JT.

Fuel contamination was another TSB for a p026d on the Duramax. Similar to some of the thoughts here.

 

[freebird_78]

Isn't P026D the one that we normally get with altitude?

I throw a P026D (at least I'm pretty sure that's what it is, from memory) like clockwork every time I go from home (3500 ft) to the mountains (7-9k feet) and re-fuel. Eventually turns itself off after a couple days, or I clear it, or I go back down in altitude. Doesn't seem to affect anything.

Perhaps this is not in any way related, but maybe it is.

 

[Lost1wing]

Isn't P026D the one that we normally get with altitude?

I throw a P026D (at least I'm pretty sure that's what it is, from memory) like clockwork every time I go from home (3500 ft) to the mountains (7-9k feet) and re-fuel. Eventually turns itself off after a couple days, or I clear it, or I go back down in altitude. Doesn't seem to affect anything.

Perhaps this is not in any way related, but maybe it is.

That may fit the map sensor theory. On the Duramax, they get clogged pretty easy. I have no idea where it is on the JT 3.0. Maybe some with the code could check there map sensor.

 

[Lunentucker]

My goodness! Just be careful with it!
A well-documented over-fueling issue really sounds like the sort of thing that could lead to the vehicle burning up completely, minus some personal items that you'd already removed due to uncertainties regarding the fuel delivery problems of course.

Worst case scenario would be a fire that gets going out somewhere remote, off the beaten path, away from other people and property, not near any watersheds or wetlands, and where local fire and rescue response times would be typically slower. Maybe even somewhere with poor cell service.

 

[stewmaster]

Have you tried any fuel additives? Looking at your last thread it could help clean out the system. It’s a cheap try at the least.

I had a P026C come on this winter, exact opposite of the of the P026D, but from my internet sleuthing it appears the two codes have some similar causes. Using an additive has eliminated my check engine light. And I think it runs smoother honestly. I never would’ve tried it but my father in law, who is an old school dieseler, suggested Stanadyne so that’s what I got.

 

[Koolcarguy]

Call ecodiesel owners Canada order a stage 2 and specifically request this code removed. Send them one of the ecus that was removed. Done deal.

Agreed these guy's know there stuff. That would be my suggestion also

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