P026B Injection Timing Performace Code after Y78 Recall

[H3LZSN1P3R]

I thought that in my case it was also a hell of a coincidence; that within a month of the pump being replaced this new issue began. Additionally, I was pretty surprised that new fuel filters aren’t part of the Y78 campaign… seems prudent to replace the fuel filters as part of a high pressure injection pump replacement but, what do I know ha-ha.

I feel like there’s definitely some truth and precedent for the injection timing codes popping up after the recall is completed… may be worth making a valid argument if you get push back.

Curious, you said the truck has 104k, did any of the instances of the code being thrown by chance happen before 100k? If so, then the date/time/mileage should be stored with the code, and that could be how you leverage the situation to get the issue fixed.

Unrelated to an extent: it seems these trucks and the injection timing performance codes have been a long running issue with the 6.7, kind of surprising that the parameters being measured in order to set this dtc haven’t been revisited or changed in many years in an attempt to back off the sensitivity of the system to reduce these situations. Most people generally notice nothing in regards to drivability with this code. I know I didn’t notice anything other than the annoying cel light… but I refuse to have a cel on a truck costing as much as they do, so I have an expecting for a resolution.

Hope you have good luck getting it resolved.

Changing the filters would be a waste of time and money for FCA there is 0 reason to change them since all the work being done is after the filters anyway.

 

[TXStormtrooper]

Code popped up for me few days ago. Was a colder morning (CenTX). Have '22 Ram 2500 18k miles. Been pulling teeth getting anybody the recalls addressed here. Fuel filters replaced at 15k. Goin to be taking them files posted previously to dealer to hopefully push the issue harder. Did see the "possible fix" of reprogramming PCM. Truck won't be going in till next week, but will update any news.

 

[blbrown]

Were you able to get this addressed? Feel free to send us a private message if you'd like to discuss further.

Kaitlin
Ram Cares

My 2020 2500 Laramie just got this code as well, Y78 completed last year, have out a little over 1k on since. Should I be concerned?

Were you able to get this addressed? Feel free to send us a private message if you'd like to discuss further.

Kaitlin
Ram Cares

 

[Caribou]

Here is what happened with my P026B issue and resolution:
2020 3500 Cummins

• Was regenerating every 150-200 miles. ~10 times in 2000 miles including regen while towing twice.
• I was religiously putting highway miles on my truck. At least once or twice a week I would drive at least an hour on the highway, which was a pain in the butt when it was necessary due to frequent regens.
• Only a handful of hours between regens.
• P026B would come and go. Once it locked and I had to take it to the dealer and get a reset.
• Dealer did a few software updates post-recall but nothing fixed it.
• My normal dealer was dismissive and just kept resetting lights and reacting. I’m lucky enough to have another RAM dealer locally. Took my truck to them. They immediately took it in to diagnose. My service guy was great recognized there was a real problem. I also called Stellantis, who were awesome. I had a great case manager who would email me regularly with updates (Thanks Star!!).
• It turns out, by the time I could get the recall done, my CP4 had already started to gradually fail.
• The dealer showed me the fuel rail - there is a small trap in the rail that was full of metal.
• They replaced the impacted fuel lines, fuel rail, and injectors.
• Problem has disappeared and never recurred. Right after I left the dealer it regened (I’m assuming they triggered a regen after the work), once 700 miles later, and since then I’m always tripping the 24 hour timer. Good to go.

Now that I’m past it, I should have seen the symptoms early:

• Prior to CP4 fuel pump recall/replacement, I had an event where it forced me to take it to the dealer for a forced regen. This had NEVER happened before. Heck, I never even had to think about regens. They only occurred at the 24 hour trigger. That should have been a sign to me, but I had never had to think about it in the past. From there out I had to baby my regen schedule.

Timeline:
-First soot load/regen required message requiring a dealer reset in summer 2022. At this point I had to start paying attention to regens.
-CP4 recall performed sometime in fall 2022 (soonest I could get it done at the local dealer)
-Regens get more frequent and P026B first pop up shortly after CP4 recall
-Software updates performed by dealer
-Dealer replaced fuel lines/rail/injectors and resolved issue in October 2023 (as of this writing, still good to go)

Anyway, hopefully this helps someone. For me, it was a partial CP4 failure, which only showed up as transitory P026B errors and frequent regens. Both Stellantis and the local dealer who did the work were awesome (but sadly, I never received a survey).

 

[blbrown]

Really strange, I got P026B Injection Timing Performace Code on startup after adding a quart of oil? I cleared the code and it hasn't repeated?

 

[DP3500]

I've been dealing with the P026B code for about +- 4 months now, dealer has had and returned the vehicle now 4 times. Dealer claims the injectors are fine but doesn't know what else to fix at this point. Are the injectors covered under 5 yr 100k mile engine and powertrain warranty? Dealer says no and 3rd party extended warranty company is fighting repairs. seems odd injectors arent covered in manufacture warranty for engine and powertrain. Also, they say the repair cost to replace all 6 injectors is $25k??

 

[flan]

I've been dealing with the P026B code for about +- 4 months now, dealer has had and returned the vehicle now 4 times. Dealer claims the injectors are fine but doesn't know what else to fix at this point. Are the injectors covered under 5 yr 100k mile engine and powertrain warranty? Dealer says no and 3rd party extended warranty company is fighting repairs. seems odd injectors arent covered in manufacture warranty for engine and powertrain. Also, they say the repair cost to replace all 6 injectors is $25k??

They are covered under the 5/100.

 

[Elkmeat]

I've been dealing with the P026B code for about +- 4 months now, dealer has had and returned the vehicle now 4 times. Dealer claims the injectors are fine but doesn't know what else to fix at this point. Are the injectors covered under 5 yr 100k mile engine and powertrain warranty? Dealer says no and 3rd party extended warranty company is fighting repairs. seems odd injectors arent covered in manufacture warranty for engine and powertrain. Also, they say the repair cost to replace all 6 injectors is $25k??

Go back to my post, #16, and read my service diagnosis and summary. Unless your service department is, and will prove to you, that they are following by the same diagnostic flow down, I’d keep hammering on them. That said, if they are being that big of a pain, it may be better to take it to another dealer.. at the point your at, even if the current dealer does decide to warranty the work.. I’d be a little concerned about the quality and workmanship, seeing as how they clearly are doing a pretty poor job treating your issue with some level of dignity thus far. Four times and still getting the run around, I don’t think I’d want them working on it, period.

 

[DP3500]

I've been dealing with the P026B code for about +- 4 months now, dealer has had and returned the vehicle now 4 times. Dealer claims the injectors are fine but doesn't know what else to fix at this point. Are the injectors covered under 5 yr 100k mile engine and powertrain warranty? Dealer says no and 3rd party extended warranty company is fighting repairs. seems odd injectors arent covered in manufacture warranty for engine and powertrain. Also, they say the repair cost to replace all 6 injectors is $25k??

Another update to my ongoing issue with P026B.

After 4 trips to original dealer, I took the truck to another local dealer. 2nd dealer found metal shavings in fuel system, said injectors were scored/faulty and needed to be replaced, high pressure fuel rail was faulty and needed replacement, along with HPFR sensor and all 6 injector lines. They tested 'new' high pressure fuel pump and is operating normal. Only thing covered under engine/powertrain warranty is Injectors, parts cost for other parts is roughly $6k according to dealer. Have a 3rd party extended warranty, which is fighting repairs because new dealer can not pin point where metal shavings originated.

How rare would it be for almost all of the parts listed for full Y78 recall to be faulty almost 8-12 months after initial recall was completed? (only high pressure fuel pump was replaced on original recall)

Were you able to get this addressed? Feel free to send us a private message if you'd like to discuss further.

Kaitlin
Ram Cares

Any further information for this case Ram Cares?

Go back to my post, #16, and read my service diagnosis and summary. Unless your service department is, and will prove to you, that they are following by the same diagnostic flow down, I’d keep hammering on them. That said, if they are being that big of a pain, it may be better to take it to another dealer.. at the point your at, even if the current dealer does decide to warranty the work.. I’d be a little concerned about the quality and workmanship, seeing as how they clearly are doing a pretty poor job treating your issue with some level of dignity thus far. Four times and still getting the run around, I don’t think I’d want them working on it, period.

Thanks for the help, new dealer used your information for testing.

 

[H3LZSN1P3R]

Another update to my ongoing issue with P026B.

After 4 trips to original dealer, I took the truck to another local dealer. 2nd dealer found metal shavings in fuel system, said injectors were scored/faulty and needed to be replaced, high pressure fuel rail was faulty and needed replacement, along with HPFR sensor and all 6 injector lines. They tested 'new' high pressure fuel pump and is operating normal. Only thing covered under engine/powertrain warranty is Injectors, parts cost for other parts is roughly $6k according to dealer. Have a 3rd party extended warranty, which is fighting repairs because new dealer can not pin point where metal shavings originated.

How rare would it be for almost all of the parts listed for full Y78 recall to be faulty almost 8-12 months after initial recall was completed? (only high pressure fuel pump was replaced on original recall)


Any further information for this case Ram Cares?

Thanks for the help, new dealer used your information for testing.

Sounds like the original dealer who did the recall did not check for shavings

 

[elephantrider]

^ yup. lazy dealer.

 

[RovingCowboy]

So I had p206b code 6 months ago. Dealer handled it right or so I thought the first time replaced all six injectors had my truck for a week not a problem since until today driving down the freeway and my check engine light came on same code……

Anyone else have the code return after having injectors done?