Car had been running well up to the point it stopped. Engine switched off ........ loud clicking noises coming from throttle body. Car went into limited power mode.

Throttle body motor unplugged ....... noise stopped. Noise also stops after total ignition shutdown a couple of minutes after switching off.

With ignition on and engine running or not I get the same symptoms.

Ran SDD diagnostics which is pointing me to a lost signal from the EGR controller.

Removed throttle body a cleaned it ....... no change when refitted.

Removed fault code and power limiting disappeared. Throttle body motor still chattering away so reluctant to drive.

Any thoughts? Is this a failed throttle body motor? Or the egr valve controller? Or something else?

Help welcome RR L322 TDV8 4.4 SE 2019 to present
RR L322 TDV8 4.4 - 2016 to present
Discovery 2 TD5 - 2010 to 2016
Discovery 1 - 2000 to 2010

Didn't mention that throttle valve does not move.

This leads me to think that EGR controller is trying to move it. UTC not getting any throttle valve position information.

I am going to replace the throttle body first. RR L322 TDV8 4.4 SE 2019 to present
RR L322 TDV8 4.4 - 2016 to present
Discovery 2 TD5 - 2010 to 2016
Discovery 1 - 2000 to 2010

If you replace the throttle body, please take the old motor out and post pictures and any part numbers stamped on the motor body. These motors are available as a separate part for lots of vehicles if you know which one. This could help others in the future.
https://www.aliexpress.com/item/throttle-c...autifyAB=0 2007 TDV8 VSE
2003 TD6 gone.
2002 P38a gone
1999 P38a gone
1997 p38a gone
1993 VSE gone
1992 VSE gone
1966 Series 2a with V8 conversion gone

Yes, I will do that. I did try to remove the motor cover but the first screw snapped and so I stopped there. This would indicate that replacing just the motor might be problematic. RR L322 TDV8 4.4 SE 2019 to present
RR L322 TDV8 4.4 - 2016 to present
Discovery 2 TD5 - 2010 to 2016
Discovery 1 - 2000 to 2010

I had the same fault previously, was replaced under warranty by dealer.
Mine sounded like a cog slipping. 2011 (MY12) 4.4 TDV8 Vogue
2016 Golf GTI PP

Gone
Audi A4
VW Passat
VW Corrado G60
VW Golf GTI
BMW E30
Mini
Vauxhall Chvette

Yes, that’s exactly what it sounds like. Thank you ... i’m encouraged that my diagnosis might be right.😀 RR L322 TDV8 4.4 SE 2019 to present
RR L322 TDV8 4.4 - 2016 to present
Discovery 2 TD5 - 2010 to 2016
Discovery 1 - 2000 to 2010

Have the same problem; sure the new throttle body will work. However part from LR is 4 weeks back order. Had to pay £285 from some enterprising Bayer.

Worth keeping the throttle clean to stop the strain on the gears - it's on my list.... 2012 TDV8 Vogue (L322)

I have the same symptoms as sarchopperman, I went and bought a new throttle body and fitted it but still it will not start and still have the clicking coming from the throttle, my Indy is thinking it’s a wiring issue as he is getting different voltage from some of the wires going to the throttle, has anyone any thoughts or has experienced this problem before?