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Adblue fault no restart after 650miles, Error codes P20BC,P20E8


Doctor786
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On 1/15/2024 at 8:38 PM, FarmerJon said:

My 65 plate A4 2.0tdi Avant currently with an Audi specialist awaiting a new AdBlue tank, pump and ECU at a cost north of 2K 🙄 

This will be the second time this has happened, once at 65k back in 2019 and again now at 106k. 
 

love the car but certain that Audi know about this issue and are reluctant to acknowledge the fact. 
 

my dilemma is, do I keep the car once repaired or will other issues follow?

On the AdBlue topic, you can get the no restart message flashed out of the ECU at a fraction of the cost of replacement parts. Give Andy at https://ecuflash.co a call. 
 

On the wider get rid or keep topic, I’ll never buy another Audi again. 16 plate B9 (actually B8.5 according to it’s car plate). Owned for 5ish years and I’ve put 50k on it. 80k in total. 
I’ve spent about 7k keeping it on the road, fixing issues that shouldn’t be there for a car this age and mileage. Not including “on-the-road costs” like tyres. 
-Had the brake servo/abs issue. 
-Had the AdBlue issue. 
-Odometer failed and had to be replaced. 
-2 broken rear coil springs. 
-Have the issue with low interior heat. 
-5 (yes five) new sets of front discs/pads due to excessive warping. 
-1 new calliper. 

I can go on, but suffice to say my experience of “Vorsprung durch Technik” is actually “our technology is crap”. 

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  • 2 months later...

I picked up my 2014 a6 avant 3 weeks ago, took it back 2 weeks ago as start stop, auto release handbrake and parking sensors were up the spout, on way home the adblue p20e8 fault popped up so I refilled it with just over 5L tried the reset which worked for about 30 seconds then got the same message pop up, but it also bought on the engine management light too. Apparently there's nothing wrong with it and I picked it up yesterday with them saying all the faults had been sorted to go back out an hour after getting home to have the 650m message pop up yet again. 

Also on a side note I was going through the menu's to find out how to change the clock time and found the engine oil level menu with it saying please reduce the level.... now just before I picked it up it Apparently had a service, should I just hand the car back as a lemon or should I persevere?

I'm starting to get the feeling that I've been sold a dud car as it wasn't as described in the ad

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On 4/14/2024 at 2:57 PM, Mel clark said:

remapping with adblue delete should help, 

I'm getting it done through warranty this time, if and when it happens again I'll be going down that road of getting rid of the adblue, might even delete the dpf and egr whilst I'm at it

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  • 2 months later...

Hi i regularly top up my adblue when i get the 1500 mile warning 

i have had the warning light come up saying adblue fault no restart in 650 miles 

 

i topped up the adblue with a 10 litre drum till it

was flowing out. And the warning light was still on  i have driven the car a bit abd now the light has gone off do i still need to be worried 

 

has anyone else experienced this ?

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Hi i regularly top up my adblue when i get the 1500 mile warning 

i have had the warning light come up saying adblue fault no restart in 650 miles 

 

i topped up the adblue with a 10 litre drum till it

was flowing out. And the warning light was still on  i have driven the car a bit abd now the light has gone off do i still need to be worried 

 

has anyone else experienced this ?

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