Engine Codes: P025C, P008A, P064A

Good Afternoon experts,

I have recently purchased a 2016 LR4 (HSE Lux, HD and Black package). I'm an experienced driveway mechanic, but I've only owned Volkswagens before this.

I know the codes listed in the title are related to low pressure in the fuel system, potentially caused by anything from a faulty fuel pump module, to bad connections, to the fuel pump itself needing replacing.

My questions are about diagnosis: in your experience, what is the most likely cause of these codes? Where is the fuel pump module located on the vehicle? Where is the High-pressure fuel pump located, if it is separate from the in-tank fuel pump?

Finally, I've registered for TOPix and am just curious about your experiences with that site.

Thanks for any information you are able to provide.

Control module is with the low pressure fuel pump. You'll need to drop the tank to explore. There is also a fuel pressure sensor on the passenger side fuel rail. It's located on the back of the rail closest to the firewall--it may be easier to remove the battery and box to diagnose it properly. Finally, the high pressure fuel pumps are located on the lower passenger side of the engine. Each pump feeds a rail. Best way to access the HP fuel line is through the wheel well, but I find the pumps easier to access from underneath.

I would start by removing the passenger wheel and spawn shield, and the skid plate. I would then start the vehicle and inspect for leaks from the HP fuel pumps to the rails.

Hope that helps!

Tbh1981 said:

Good Afternoon experts,

I have recently purchased a 2016 LR4 (HSE Lux, HD and Black package). I'm an experienced driveway mechanic, but I've only owned Volkswagens before this.

I know the codes listed in the title are related to low pressure in the fuel system, potentially caused by anything from a faulty fuel pump module, to bad connections, to the fuel pump itself needing replacing.

My questions are about diagnosis: in your experience, what is the most likely cause of these codes? Where is the fuel pump module located on the vehicle? Where is the High-pressure fuel pump located, if it is separate from the in-tank fuel pump?

Finally, I've registered for TOPix and am just curious about your experiences with that site.

Thanks for any information you are able to provide.

Click to expand...

Splash shield, not spawn shield....

Thank you sir. I know what I'll be up to this weekend!

Update:

Today the check engine MIL did not stay on during driving at all. The truck starts normally, idles normally, and drives normally, so unless something else happens I'm chalking this up to a little British gremlin.

Thanks to all who replied.

Keep an eye on battery health. That can cause all sorts of weird things like that.

mbw said:

Keep an eye on battery health. That can cause all sorts of weird things like that.

Click to expand...

Good tip. I bought the truck used and haven't yet checked the battery date on the main, or the Eco drive battery.

Hello all, as you can see I am new to this forum. My wife has a 2016 LR4. We absolutely adore the car, have had it since 2017, it had 19k on it when we got it.
Got the 7 year extended warranty on it, which expired on April 1 this year.
Had the coolant tubes under the supercharger replaced under warranty. other than that it has been a super solid no trouble car.
Well, recently it developed a rather odd, intermittent problem. It stalls at idle, or it will simply not start. Turns over just fine, and if it does start it feels its like it is out of fuel.
Took it to the local Land Rover dealership, a they found exactly these three codes. P025C, P00C6, P008A. They decided to replace the low pressure fuel pump as well as the Fuel pressure regulator.
On the second drive after the repair, the problem is back again.
I personally believe it is an idle issue, someone is for some reason commanding the fuel pump to stop working. Why and how to find who, i have no idea.
Hoping that I am not that special, that others here may have had a similar problem and can shed some light on what repaired the issue.
Thank you in advance.

Check out this thread that smorelli just posted. Sounds like it might be similar issue.

@16LR4Landmark Ignore my last post…I see now that you did find smorelli’s thread and you were the one asking about the location of the relay. Reading too fast today. Relay is in the engine compartment junction box (near the battery). Flip the lid over and there should be a diagram of all the fuses and relays. The fuel pump relay will have the fuel pump symbol. I believe its R8.