Eco Diesel Code P026D

[Rusty PW]

Yes, HPFP, High Pressure Fuel Pump

This happened before or after the CP4 fuel pump replacement?

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[Deleted member 54903]

This happened before or after the CP4 fuel pump replacement?

The recent pump replacement seemed to fix it but the same code popped at about 300 miles after the pump replacement. To date, nothing they have reached has been a permanent fix

 

[Deleted member 54903]

The recent pump replacement seemed to fix it but the same code popped at about 300 miles after the pump replacement. To date, nothing they have reached has been a permanent fix

That's the most recent news

 

[djthumper]

This is interesting because I just started getting a light. I grabbed a couple of screenshots. I even have a permanent one.

 

[Marlinvx]

I am getting the same codes, only started after fuel pump recall was complete. My mpg also went to crap from 20ish to 17mpg I town after the pu.p swap. Need to get an appointment to have it looked at I guess. Only 18k miles.

 

[Deleted member 54903]

I finally found a dealer who could properly diagnose the problem. I had two injectors going bad. They replaced the two injectors and I didn't see the light come back on for several thousand miles. When the light started coming on again they found two different injectors to be bad and replaced them. Even though the dealer agreed that the engine should receive 6 new injectors Jeep wouldn't approve it. We are now at 3000 miles since the last two were replaced and so far so good. I have 18,000 left on my warranty so I'm hoping the last two go out before then.

 

[rharr]

I finally found a dealer who could properly diagnose the problem. I had two injectors going bad. They replaced the two injectors and I didn't see the light come back on for several thousand miles. When the light started coming on again they found two different injectors to be bad and replaced them. Even though the dealer agreed that the engine should receive 6 new injectors Jeep wouldn't approve it. We are now at 3000 miles since the last two were replaced and so far so good. I have 18,000 left on my warranty so I'm hoping the last two go out before then.

Any indication the old CP4 sent metal into the injectors and the no one caught it during recall?

 

[Deleted member 54903]

It was offered as a possible cause for the first two, no mention of possible causes on the second two

 

[Trdecker]

Hey Guys, New to your forum! Having same issue with my 21 wrangler with about 86k on it! I took to dealer and after paying for diagnostics. Their repair was to replace a clogged catalytic converter at around 3k. Has anyone had a clogged converter on their ecodiesel? I can't even tell you if my wrangler has ever hit a regen! I do alot of hwy driving. They said nothing about injectors, sensors or fuel pump. I have had the recall done! Not really sure they did more than pull old one and put it back on! Having a hard time trusting the service departments!

 

[Rusty PW]

When the cat goes bad. Something caused it. Most likely an injector.

 

[Trdecker]

Unfortunately, we no longer have mechanics! We have computer techs. And what the computer says is gospel! I'll have to pull it and actually see if it is bad.

 

[daigljk]

I am currently getting P026D CEL. Using jscan, i looked at the Total fuel correction values at each injector. I'm not a rocket scientist or diesel professional mechanic but I would assess that injectors 1-4 are bad???

 

[Idlethunder]

I am currently getting P026D CEL. Using jscan, i looked at the Total fuel correction values at each injector. I'm not a rocket scientist or diesel professional mechanic but I would assess that injectors 1-4 are bad???

Did you ever get this resolved? I've had P026D come up twice over the last few hundred miles.

 

[daigljk]

Did you ever get this resolved? I've had P026D come up twice over the last few hundred miles.

It is still intermittently happening. No rhyme or reason.....over the past year it happens when the weather is warm....when it's cool....when it's dry...when it's wet etc. I cannot determine any kind of pattern. I clean the MAP each oil change, run a paper air filter. Sometimes I use Jscan to clear the code sometimes the code goes away on it's own. Each time the light comes on now I start singing ...."This little light of mine.....I'm going to let it shine"

 

[Idlethunder]

It is still intermittently happening. No rhyme or reason.....over the past year it happens when the weather is warm....when it's cool....when it's dry...when it's wet etc. I cannot determine any kind of pattern. I clean the MAP each oil change, run a paper air filter. Sometimes I use Jscan to clear the code sometimes the code goes away on it's own. Each time the light comes on now I start singing ...."This little light of mine.....I'm going to let it shine"

This was the second time mine has come up in the last week. I've been clearing it but next time I'll see if it goes away on it's own. I've had a Banks Derringer and Pedal Monster installed along with iDash for the last month but I bypassed the Derringer and removed the PM today at noon. I doubt either are responsible but it is worth trying and they were coming off soon anyway. I'm waiting on weight loss parts to get here and would like to figure this out before making any serious change.

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