Ecodiesel codes p0087 and p016f

[ivos]

Hi,I have a Jeep Grand Cherokee with the ecodiesel..my car just stopped, codes p0087 and p016f..rail pressure low and closed loop fuel pressure control low
The low pressure pump delivers 60psi, rail has only 800psi.I checked the injector return flow and pressure regulator on the rail,ok.
Looks like the high pressure pump?? Right?
The high pressure pump is new replaced from the dealer,did only 4000k's,I checked the solenoid on the pump looks fine.

Any ideas would be much appreciated.. thanks ivo

 

[TC Diesel]

Check the electronic LV...

 

[ivos]

Check the electronic LV...

Thanks..what is the electronic LV ??

 

[TC Diesel]

It's on the Driver's side rail , limiting valve, CP4s need to run at 100% Volume (Combustion fuel) for longevity, so the LV regulates the fuel that's not needed for combustion back to tank. I don't care for electronic LV, the 2019-24 6.7 has the ELV, I hope it's done away with in the 2025 7.2 Cummins in 2025.

 

[ivos]

It's on the Driver's side rail , limiting valve, CP4s need to run at 100% Volume (Combustion fuel) for longevity, so the LV regulates the fuel that's not needed for combustion back to tank. I don't care for electronic LV, the 2019-24 6.7 has the ELV, I hope it's done away with in the 2025 7.2 Cummins in 2025.

I checked that valve on the rail.I took the return line off that rail while I was cranking,there was a very small amount flowing back for a second and than it stopped.No fuel back to the tank while I was still cranking.So I think it's working fine.

 

[BTdriver]

This may seem like a dumb question, but when was the last time the fuel filter was changed?

 

[ivos]

Fuel filters are new..

 

[BTdriver]

Then, if all the other good suggestions don't "pan out", all I can think is to inspect the wiring harness for rubbing or other damage.

 

[Josedm74]

Hi,I have a Jeep Grand Cherokee with the ecodiesel..my car just stopped, codes p0087 and p016f..rail pressure low and closed loop fuel pressure control low
The low pressure pump delivers 60psi, rail has only 800psi.I checked the injector return flow and pressure regulator on the rail,ok.
Looks like the high pressure pump?? Right?
The high pressure pump is new replaced from the dealer,did only 4000k's,I checked the solenoid on the pump looks fine.

Any ideas would be much appreciated.. thanks ivo

P016f can be the fuel filter clogged or dirty also can be the fuel control actuator. Also check and see if the fuel pump is activating , also check the relay of the fuel pump they go bad , go to YouTube and look for a video showing you how bypass the relay is you bypass the relay and the truck starts the pump is good if doesn’t start is the relay . I don’t know if the PDC Box on Cherokee is the same as the rams but on rams the relay is integrated to the box you can buy a bypass kit or buy the PDC Box and it cost like $700 dealer price is cheaper online 1/2 price . I would recommend the bypass kit is cheaper .