P00B looks related to P006. Some kind of intake leak.

P040D is standalone and will be your exhaust gas temperature sensor faulty. If you remove the engine cover and airbox, the sensor plug is easily accessible to put a multimeter on and confirm open loop. Guide here: https://www.fullfatrr.com/forum/topic67357.html


I think your next steps are as above and get a smoke test done, which will save you money over replacing lots of parts to find the cause. 2015 Range Rover Autobiography 4.4 SDV8

P0033-00 (2F) Turbocharger/supercharger bypass valve control - circuit open
I think this is the problem, and it cause other faults as well.

P040D is yes, standalone as Gary say. Acess is difficult true, but not impossible to replace on LHD as well
https://www.fullfatrr.com/forum/topic50202-90.html

Hi guys! Thanks for your support...
Sensor just arrived from Bripart and ordered a smoke tester. Old sensor tested before and nothing, fried.
I decided to go ahead and waiting for the arrival of the Neilsen socket I took some pics and videos with the endoscope, it's a real nightmare! The stainless nut dropped in the abyss....

VIDEO FORCING THE HEATSHIELD: https://youtube.com/shorts/Obv_D_trd2M

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Hi guys! Finally I could remove the old sensor and install the new...also made a smoke test without results.

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P0033-00

Hi Jaguar,
Understood! Ordered a vacuum pump to test the bypass valve, also a tube cutter to remove the DPF.

Its not a vacuum valve, its electrical solenoid valve.
There is two valves after secondary turbo: bypass valve and shut off valve. Shut off valve is vacuum, bypass is electrical.
Circuit open mean something is wrong with wiring or valve solenoid is death.

Damn!!

Do you mean this part?

I was convinced that it was about this:

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shinchan wrote:

Damn!!

Do you mean this part?

Yes of course you can check shut off valve as well to be sure its working properly.
But most likely you have some electric problem with bypass valve according fault code.

Just removed the entire part....

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and then the Solenoid:

https://youtube.com/shorts/ShEv_mvp6R8

The solenoid opens and closes, it seems to work fine but it does not perfectly seal the passage of air. If I blow through one of the ducts with the valve closed, some air always gets through.

Last edited by shinchan on 25th Aug 2023 11:30pm. Edited 2 times in total

What do you think about? Wiring?

Finally solved the problem with P0033, the connector number C1527 was unplugged.
I´ve some doubts still about the integrity of left valve cover, but now the big problem is DPF. This was almost certainly caused by me doing forced regens using my GAP IID.