Thread: Gear box fault warning

Originally Posted by Bru

Cheers for that Thom, what sort of cost was that to get fixed. Thanks

$1950 for the pump
$140 for a new belt kit
$600 for labour

Originally Posted by TopEndThom

$1950 for the pump
$140 for a new belt kit
$600 for labour

Cost me ~$1770 in parts to do it myself. Unless you _really_ like working under the bonnet I’d say it’s well worth paying someone else to do the job.

Originally Posted by TopEndThom

I had the exact same symptoms on my 2010 2.7. It turned out to be the high pressure fuel pump. They commonly fail in this way.
Apparently the gearbox fault is a result of a sudden loss of torque to the box, so it gets confused and throws the code.

The transmission fault is due to the Engine ECM dropping the bus comms when it faults. It’s a communication fault when the other modules don’t hear what they are expecting to hear in a relatively (a couple of seconds) short timeout. Often it’ll also cascade to the terrain response and park brake. If you can restart (key off / key on) within a couple of seconds of the initial fault it’ll reset and not propagate to the other modules.

Originally Posted by DiscoJeffster

Not for basic fault diagnosis, no they’re not

So any idea what did I do wrong failing while trying to use mine to connect to Brus car?

Originally Posted by BradC

Cost me ~$1770 in parts to do it myself. Unless you _really_ like working under the bonnet I’d say it’s well worth paying someone else to do the job.

Very well done. Is that for a genuine pump plus belt kit? I was happy to part with the cash and keep the skin on my knuckles.

Okay so after the kind help of a fellow LR enthusiast I got the code

PCM-Engine Diesel 2.7L

-UNKNOWN-00 (2D)
-UNKNOWN-00 (2D)
P0088-00 (68) Fuel rail/system pressure - too high

So next step is to see about getting it sorted as it’s starting to play up more now that I’m back in the city sitting in traffic it seems to act up. Thanks again for all the input.

Originally Posted by Bru

Okay so after the kind help of a fellow LR enthusiast I got the code

PCM-Engine Diesel 2.7L

-UNKNOWN-00 (2D)
-UNKNOWN-00 (2D)
P0088-00 (68) Fuel rail/system pressure - too high

So next step is to see about getting it sorted as it’s starting to play up more now that I’m back in the city sitting in traffic it seems to act up. Thanks again for all the input.

What was the reader? I’d suggest those unknown errors shouldn’t show up as unknown

Originally Posted by Bru

Okay so after the kind help of a fellow LR enthusiast I got the code

PCM-Engine Diesel 2.7L

-UNKNOWN-00 (2D)
-UNKNOWN-00 (2D)
P0088-00 (68) Fuel rail/system pressure - too high

So next step is to see about getting it sorted as it’s starting to play up more now that I’m back in the city sitting in traffic it seems to act up. Thanks again for all the input.

.

A quick Google tells me that P0088 is high fuel pressure too high, and relayed to the fuel rail pressure sensor voltage. A failing high pressure fuel pump leads to a drop in fuel delivery pressure (as seen by the sensor) as more is bypassed through the pump and back to tank. I don't know what type of fuel pressure sensor the 2.7 runs, but given that code, that would be a point to start fault finding from.

As others have said, a hpfp fault usually gives a whole lot more cascade faults in other control modules.

Strongly suggest to take it to a reputable lr indy, or a diesel injection specialist.