E66 fault codes cures please? EGR & Throttle

[Boxbrownie]

Been driving my friends 2006 730LD SE which I am in the process of preparing for sale (he buggered off to Australia and left me with the 7 on the day he flew!), it has needed a few things to bring it to saleable condition (tyes, lower steering arm, discs and pads) , now this beast threw up a fault code at the weekend "emission limit exceeded" appeared briefly on the display along with a warning chime, it left an ECL on the dash.
Having read the codes now it appears there are two problems. .1. P0401 EGR flow insufficient.......2. P2620 Throttle position output signal open circuit.

Now I think there is little I can do about the EGR flow apart from spend more money, unless somebody knows different?

The throttle position output signal I am willing to have a poke at if I knew where the sensor was....is it on the pedal assembly or like more usually on the throttle body?

Again if anyone knows or has had these problems before, I'd love a heads up before I spend any more money just to sell this beast! Cheers maties

[Jack Dabsy]

Wish he left me a 7series lol...
EGR - Remove it and clean it with Carb-Cleaner (Xylene) soak it for a while !
TPS - Located on the throttle body, clean or replace !
HTH
Daz

[Boxbrownie]

Thanks Dabsy, which part of the EGR system do I need to clean exactly?

I can see the EGR cooler which I assume is fine, but after that I am lost without a manual (which of course I do not have).

As for the TPS I took the engine cover off yesterday (before the snow arrived!) and could only see the connection for the stepper motor but no other sensor to the throttle body.

[Jack Dabsy]

TBH, the TPS is a small plastic-cased potentiometer attached to the Throttle-Body and rarely fails (Anything Can fail though).
The EGR is a mechanical device that looks a little bit like the old carb-vacuum valve. Remove this valve and soak it in xylene or isopropyl. Check the operation of the EGR cooler too, while you're in the mood !!