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New EGR and now getting P0405 CODE.

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August 7, 20214 yr

2.0 TDI now running perfect with new EGR valve but now showing P0405 code, been told I bought a too cheap valve (£145 fuel parts) which has different pin configuration?

Anyone had similar problems with the more affordable range of valves? I could have got one half the price of mine if it wasn't going to work!

August 10, 20214 yr

Might be worth changing the sensor before you write off the egr. Or get a second opinion.

August 10, 20214 yr

Author

Thanks, I'll do research to see if I can work out that is, not a lot of info on the EGR sensor location!

August 11, 20214 yr

Hi back to basics, did you do a re learn of the new values, adaptations, if not that could be your problem, the only other thing it could be is the inlet manifold is bunged up and will require stripping and cleaning and a new gasket set.

Steve.

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A% front suspension groan
Audi A5 Club

A% front suspension groan

IainH · 7 minutes ago7 min

Last summer while in the heat of southern France, my A5 (Dec-2017, 40,000 mile) developed a front suspension creak. It was always at low speed and particularly when turning left. The car was completely checked on my return, 'shaked, rattled and rolled', but steadfastly refused to creak once, however, everything was checked, levered, put in a shaking plate, and no creaks or movement in joints found, and so while noisy, the car was declared 'good' (safe). The sound is very like the creak heard her
- 0 replies
- 4 views
IainH

7 minutes ago7 min

IainH

7 minutes ago7 min
Park My A3 without having brakes on
Audi A3 (8Y) Forum

Park My A3 without having brakes on

JGB · 4 hours ago4 hr

Hi all I have had my A3 since September 2025 and I haven't yet been able to figure how to park it in my garage with the brakes off. It's an auto and I have read lots of stuff but I cannot figure it out. I may be stupid but there you go any helpful advice will be appreciated. JB
- 1 reply
- 50 views
JGB

4 hours ago4 hr

john260164

33 minutes ago33 min
Wing mirrors don't fold out when unlocking the car.
Audi Q2 Club

Wing mirrors don't fold out when unlocking the car.

john260164 · 35 minutes ago35 min

Hi. My partner's recently bought Q2 has an odd and not very welcome feature. The wing mirrors fold on locking the car with the key pilp, but don't unfold when the car is unlocked with the plip. They only do so when the key goes in the ignition. In some circumstances this can lead to doubt about whether the doors are locked or not whereas before it was obvious as the plip alone folded and unfolded the wing mirrors (as is does with my similarly new A3). The garage says it can't be changed but does
- 0 replies
- 16 views
john260164

35 minutes ago35 min

john260164

35 minutes ago35 min
A3 uncommanded engine shutdown
Audi Technical

A3 uncommanded engine shutdown

Bobs dad · 3 hours ago3 hr

I have a new A3 Black Edition auto. Within four weeks of delivery the engine cut out whilst driving, the drivetrain under positive power. The car rolled to a complete halt, the retardation entirely commensurate with the wheels driving a dead engine - it did not freewheel. The instrument panel remained powered and displayed no warning lights or fault messages. I shut the car down and after a pause restarted. Since then it has operated normally. The Distributor has found no data supporting t
- 0 replies
- 31 views
Bobs dad

3 hours ago3 hr

Bobs dad

3 hours ago3 hr
Any ideas on what this sound could be? Audi A3 8P
Audi A3 (8P) Forum

Any ideas on what this sound could be? Audi A3 8P

Lewbyleww · 6 hours ago6 hr

Hi all does anyone have any idea on what this distinct tapping noise could be? had the rocker arms, lifters, injectors and all cam followers replaced and is still present. Noise is at idle and speeds up with acceleration and can hear it inside doesn't affect performance. Been advised by three separate mechanics its not bottom end so at my wits end really, any thoughts appreciated. Thanks a7bcf128-5947-4002-afba-29c811dd5d88 (1).mp4
- 0 replies
- 73 views
Lewbyleww

6 hours ago6 hr

Lewbyleww

6 hours ago6 hr
C5 RS6 034 strut top mount
Audi A6 (C5) Forum

C5 RS6 034 strut top mount

petec5 · 6 hours ago6 hr

Hello all After a year of owning my first RS6 c5. It seems I'm in need of new strut top mounts. Do any of you have experience of the 034 rubber mounts? I've seen they are solid vs original ones that have bearings. How much of a difference does this make. And on a side note has anyone used RB Racing brake disc. What's your thoughts? Any help will be much appreciated Pete
- 0 replies
- 26 views
petec5

6 hours ago6 hr

petec5

6 hours ago6 hr
Does anyone know what this high pitched noise is?
Audi A1 Club

Does anyone know what this high pitched noise is?

redaudi20 · December 11, 2025Dec 11

IMG_2335.MOV Hi there, My A1 1.6 TDI Sport 2017 makes this high pitched noise which sounds like it’s coming from the right rear side. It more tends to happen when the weather is cold. It starts when the car has been going for a couple miles and stops as soon as you turn the engine off. I have attached a video of the noise. Does anyone know what this could be? Thanks IMG_2335.MOV
- 3 replies
- 696 views
redaudi20

December 11, 2025Dec 11

StanH

6 hours ago6 hr
Central locking
Audi A3 (8P) Forum

Central locking

BlueBird · 7 hours ago7 hr

My passenger door only unlocks during summer months, back door same side, intermittent during winter. Is there an explanation please?
- 0 replies
- 44 views
BlueBird

7 hours ago7 hr

BlueBird

7 hours ago7 hr
Alternator failure related to mild hybrid system?
Audi A7 Club

Alternator failure related to mild hybrid system?

PocketsAintEmptyCuh · October 16, 20232 yr

I've been seeing more and more posts across FB and multiple forums about people having the alternator failure related to the 48v mild hybrid system and wanted to see if anyone has had this issue and how their experience has been. I know in USA they have announced a TSB with an extended warranty for 7 years but I am trying to get more info from Audi UK but not getting anywhere. Has anyone had this issue and if so has Audi fixed it (if out of warranty)? It seems to be tha
- 664 replies
- 213,015 views
PocketsAintEmptyCuh

October 16, 20232 yr

PeterWJames

7 hours ago7 hr
A6 2018 C8 3.0tdi quattro drivers mirror indicator
Audi A6 (C7) Forum

A6 2018 C8 3.0tdi quattro drivers mirror indicator

Steve320cd · Saturday at 02:12 PM5 days

Hi all, was on le shuttle yesterday coming home when I noticed my drivers mirror indicator must have had a stone hit it and broken an inch off, no damage to the mirror. Has anyone replaced one? Is it an easy job and where to get a replacement that is the correct whiteness without paying main dealer price? Tia
- 3 replies
- 160 views
Steve320cd

Saturday at 02:12 PM5 days

Tigger

7 hours ago7 hr
S-Line suspension change
Audi A3 (8Y) Forum

S-Line suspension change

lbr1978 · May 17May 17

Hi all Looking for some advice on changing out the rather firm and jittery S-line suspension on my 2024 A3 8Y (black edition) to something more comfortable and softer (possibly akin to standard SE suspension or equivalent). Any suggestions on what I should be considering and looking at for daily driving only please? I’ve heard Bilstein (B4s ?) and maybe the eibach pro springs would help make things more comfortable? thoughts and suggestions much appreciated. Any real world experience of changing
- 3 replies
- 302 views
lbr1978

May 17May 17

Steve Q

10 hours ago10 hr
Latest SQ5 Transmisdion whine
Audi Q5 Club

Latest SQ5 Transmisdion whine

Bas Ryan · Monday at 02:03 PM3 days

New to Forum. I’ve owned 5 SQ5 (all new or ex demo) since 2016. 4 V6 diesels which I honestly think are an incredible car and my current car the new V6 petrol version. The quality of this new model has definitely taken a dive but my main gripe is the awful transmission whine from 60mph upwards. It’s like driving an old Landrover. The dealer maintains he can’t hear it. Everyone who rides in the car or drives it spots it straight away. Surely my car is not the only one with this problem? Any thoug
- 1 reply
- 126 views
Bas Ryan

Monday at 02:03 PM3 days

Steve Q

10 hours ago10 hr
Are S5's notorious for not being serviced?
New Members Introductions

Are S5's notorious for not being serviced?

ZeroX · Saturday at 10:46 AM5 days

Hi, following on from my previous thread, I have seen another car that I was interested in: https://www.evanshalshaw.com/search/details/used/audi/a5/automatic-petrol-white-coupe/06ce9494-f94d-f111-8fdd-000d3a874790/ When I enquired with the dealer, they said there is only one stamp in the book from February of this year, and no history at all in the Audi database. So there is only evidence of 1 service in almost 10 years. I am starting to get a bit !Removed! off with this actually, and it's real
- 18 replies
- 415 views
ZeroX

Saturday at 10:46 AM5 days

ZeroX

19 hours ago19 hr
AUDI A3 8P 2010 Enable/Code Hill Hold Control
Audi A3 (8P) Forum

AUDI A3 8P 2010 Enable/Code Hill Hold Control

natureboy__86 · Tuesday at 08:46 AM2 days

Hi, im having trouble enabling hill hold control using OBDeleven Pro. Iv tried enabling it by ticking the box and confirming but shows up as esp fault. Would anyone be able to help?
- 1 reply
- 106 views
natureboy__86

Tuesday at 08:46 AM2 days

Stevey Y

21 hours ago21 hr
Bose radio antenna mouse damage!
Forum Suggestions

Bose radio antenna mouse damage!

Robert Coop · Tuesday at 08:53 AM2 days

Good to join the Forum. A mouse got into my wife's beloved light blue 2004 A4 TDI Sport Auto Convertible (she has had it from new) and has chewed through the aerial cable under the back seat. and damaged it in two other sections. What connectors are recommended to re-join it and are they easily sourced - the garage made out I might need to go back to the loom - surely not? The radio is the original Bose Symphony. Thanks, Robert
- 5 replies
- 138 views
Robert Coop

Tuesday at 08:53 AM2 days

Robert Coop

22 hours ago22 hr

Welcome to the Audi Owners' Club - An Independent community!

New EGR and now getting P0405 CODE.

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Topics

A% front suspension groan

Park My A3 without having brakes on

Wing mirrors don't fold out when unlocking the car.

A3 uncommanded engine shutdown

Any ideas on what this sound could be? Audi A3 8P

C5 RS6 034 strut top mount

Does anyone know what this high pitched noise is?

Central locking

Alternator failure related to mild hybrid system?

A6 2018 C8 3.0tdi quattro drivers mirror indicator

S-Line suspension change

Latest SQ5 Transmisdion whine

Are S5's notorious for not being serviced?

AUDI A3 8P 2010 Enable/Code Hill Hold Control

Bose radio antenna mouse damage!

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