EGR Valve Goosed, does this seem right?

[Tony_N]

So my MY12 2.0 with 77k on clock had a flashing glow plug light come on a couple of weeks ago. Turned engine off and back on, gone for a over a week. Then came back on. Same, turned off engine and disappeared for another week or so before eventually returning accompanied with a solid amber engine management light.

Had the vehicle recovered to the local Audi dealer who have looked at it and told me the following...

Hi, The Eml warning light on the dash & the engine running fault is caused by electric fault with the “egr” or “exhaust gas recirculation valve” which is fitted to the egr cooler, This component regulates small amounts of exhaust gas back into the intake for the engine and is used to control nitrogen oxide levels.

Also attached this picture
unnamed.jpg


I asked for clarity on why this had occurred and received this reply...

The egr is required to be replaced (not a serviceable item), because ingress of moisture has corroded the electrical component of the egr valve, which has caused a internal open and high resistive circuits. The Glow plug warning light on is the same concern, The Audi emission update is not connected to this complaint.

The quote for the work is £770, which to me, seems extortionate, given the part on Euro car parts is £385. Now I'm no mechanic, but this doesn't seem right.

Has any one else had this problem? I'm finding it hard to stomach the fact that for a car that's only 5 years old, I'm having to shell out this amount of money already on one fix, besides the service I've recently had done. I might expect this from a car that was 10+ years old or from a less reputable manufacturer, but from a 'prestige' one

Anyone any thoughts?

[zollaf]

local audi dealer wont be shopping at ecp. you could always shop about for a cheaper quote. gone are the days of cheap motoring i'm afraid, even if you buy a prestige car like an audi, that comes with prestige sized bills to keep it in tip top condition. in days gone by you could just remove and blank the egr, but you can't do that anymore.

[Tony_N]

Doesn't seem right though does it, that such an expensive part can break down so quickly.

Water ingress isnt happening over night. Thats gone on for some time surely, so why?

Its not a part thats getting a hammering all day like suspension. It sits in the engine bay. Water shouldn't be getting to it

[Gazwould]

How has the water got in , there's a decent yellow seal there .



Blank and remap .

[Widwow]

in days gone by you could just remove and blank the egr, but you can't do that anymore.

oooo I wasn't aware of that.

I understood on the current version type of the 2.0 engine, C6, C7 that the EGR was still delete-able, and it was additionally wise to remove the DPF at the same time (increased sooting would kill the dpf) if you chose to do it. The cost is going to be comparable to the price stated. Legal and ethical questions would still remain, but I didn't know you couldn't do it.

You learn something everyday.

[Gazwould]

Increased sooting ?

Less sooting for dpf with egr out .

[Crasher]

This is a known problem under Technical Product Information notice number 2028382/5.

This states that the reason moisture gets in there is unfavourable humidity, in other words it's a bad design. The only clue you often get to this is the fault code "P0322 engine speed sensor-no signal" as this is on the same power circuit.

There is no legal or ethical dilemma or question over removing the EGR and or the DPF, IT IS ILLEGAL and in view of the current attitude towards diesel, downright bloody stupid and irresponsible.

[Scott K]

Price sounds about right. One of the guys at work had it done at an indy for £650 last week. Apparently the one they fitted comes with a lifetime warranty.

[Widwow]

Ahhh - apologies.... its a miss assumption on my part. For clarity - taken from a very reputable performance modifiers website.

"The EGR Valve should NOT be removed on vehicles that still have the DPF Filter in place, doing so may block the DPF as the EGR Valve operation is a prerequisite for DPF Regeneration."

This statement led me to believe the DPF would be blocked by only what I could assume to be soot but, the detail then could be taken to mean, that regen wont occur with out the EGR valve operating, leading to DPF "failure", as the process wont occur.

If I didn't have a mind to maintain my warranty, and/or resell back to Audi, I would certainly be considering EGR/DPF removal if there was any kind of failure. Whilst I appreciate the OP wasn't asking about the legalities or ethical questions about removal of said EGR.

The price, seems about right for Audi. As for the length of service of the part, the robustness and likely hood of water egress, is no different to that as found on other cars I have owned, example Mk3 Mondeo... I had EGR's fail quite regularly (50 to 80K) due to lack of lubrication in the EGR and the failure of parts inside, again brought about my moisture, same on the Jag 2.2 Tdi. It was cheaper to purchase parts from jag, different part number but the same item (there all were ford anyway) and about £250 cheaper.

I am guessing its quite a common fault (?), but not common enough to be considered a recall or warranty failure (?). Kind of unlucky I guess. Be interesting to know where the water gets in, and from what? Driving? Washing the engine bay? Blocked rain water gulley leading to water going where it shouldn't.

[Tendaimwari]

This is a known problem under Technical Product Information notice number 2028382/5.

This states that the reason moisture gets in there is unfavourable humidity, in other words it's a bad design. The only clue you often get to this is the fault code "P0322 engine speed sensor-no signal" as this is on the same power circuit.

A good design should prevent any water ingress. The fact that the seal is not up to the task is key. Enquire what were the fault codes and if any are as above get them to fix the problem FOC.