I would expect the hottest sensor to be after the cat so maybe swap 2 and 3 in my suggestions.
I'll see which sensor my manifold-only Euro 4 version shows later today.

,this is from my afternoon run, sensor that reads 100 on your car was at 360C just before i snapped the picture.

Click image to enlarge

My Euro4 engine shows 100 deg C for all 4 EGT sensors after a run and the P040D-00(2F) fault, if cleared, returns once the engine is started. I'll see if anyone else here can list theirs.

The EGR temp sensor isn't listed for live values but I don't think that is because of the fault as the 3 non-existent EGT sensors and the DPF pressure sensors are listed.

Update - s/b 4 exhaust EGT sensors

Last edited by GraemeS on 13th Aug 2018 5:59am. Edited 1 time in total

I've just found a 5th EGT sensor - I initially missed the one behind the DPF.

I note that the electrical wiring schematic, after applying a correction document, shows an EGR inlet temp sensor and an EGR outlet temp sensor but not the manifold EGT sensor. I suspect that the 4 EGT sensors are all in the exhaust system and the manifold sensor is the EGR inlet sensor. This would correlate with bank1 sensors all being primarily from the bank with the primary turbo and the bank2 sensor in the secondary turbo exhaust pipe and that there are 2 EGR sensors, with the egr inlet temp sensor located in the manifold and aligning with the DTC description of EGR temp sensor A.

Edit: It appears that the IIDtool does not show live values for the EGR temperature sensors so I have contacted GAP.

Graeme, I was just typing to say I think there are 5 EGT sensors too!

This is my DPF / exhaust off the car:

Quote:

Depending how the temp probe fails, depends on what message it sends the ECU...
The reason behind the over fuelling is the probe reports back cold and opens the EGR and cold running cycle to the injection system??? (like a choke on a petrol) hence the over fueling and filling the DPF system/restricted performance etc etc

Quote:

You can ignore the code P040D-00 it never clears and been told/shown that the LR diags show it as a historical fault that clears and then come back. it is due to the tight tolerances of the ECU against that sensor.

GraemeS wrote:

Another EGT sensor LR022893 (now LR052169) is located in the left manifold...

Your logged temperatures correlate well with post primary turbo/pre cat, post cat/pre DPF, post DPF and post secondary turbo. I'm now confident that the manifold sensor is EGR inlet sensor / EGR sensor A.

So maybe the manifold is the 5th sensor or other words, we can't see the readings for this?
. Cheers, Greg
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2011 Vogue SE 4.4 with lots of toys in Stornaway

Quote:

I'm now confident that the manifold sensor is EGR inlet sensor / EGR sensor A.

There are 6 in total, 2 being for EGR plus 4 in the exhaust pipes. We know that the EGR outlet sensor is in the cooler outlet pipe so the EGR inlet sensor, as shown in the wiring schematic, has to be the one in the manifold.

I couldn't work out which sensor in your log was the manifold as it should have been hotter than post turbo. Now I believe that the manifold sensor wasn't logged.

I'll see if I can spot the manifold sensor wire colours with just the cabin air intake removed. If 1 is brown and the other pink and white then they would correspond with the EGR inlet sensor colours.

Starts to make sense more now. Given Nino's readings on I became really unclear. But now I think we're onto the problem.

Why the EGR temps aren't on the GAP I'm not sure. I'll have another look on the tool, but you said there was no EGR Temp value available. Weird.

But I'm ordering a manifold sensor! And yes the revision is probably a sign it's been improved. You'd hope.

In searching the web I found that the 4.4's bigger brother, the Ford 6.7litre Powerstroke deisels, which are made in the same Mexican factory as our 4.4's, suffer from EGT probe failures too. Replacements are $20 !!
. Cheers, Greg
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2011 Vogue SE 4.4 with lots of toys in Stornaway

$20? Not a LR price for sure!

Will you be buying the tool? I'll certainly be on the look-out for your comments on the task and hoping that Gap provide live values for the EGR sensors.

The sensor with the original part number appears to have a shorter metal section above the mounting nut than the current version where the wire connection point is further away from the manifold and shield.