- Having just had a new egr valve fitted (by an indipendant audi specialist) after the diaphragm parted company and fell inside the inlet manifold causing total loss of power,he drew my attention to the color of the diesel that came out of the fuel filter he also changed was blue.
- Car was running fine for a week and now I am getting code p0234 on a generic code reader NOT vagcom,This started appearing at 2800 rpm but now i can achieve 3500+ so ifeel its improving slowly,I have just 1 question to ask is it possible for dirty fuel to cause this code to appear ??.
- Any thoughts much appreciated.
new egr valve fitted
- Thread starter noelpen
- Start date
Yes try v power had the same problem fixed today you might have a sticky vanes new turbo if v power doesn't fix
V power as in super diesel ?? as I use total super diesel all the time.
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first you should of just done the egr delet in my opinion second i had some troble with overboost my mix fix was let your fuel get as low as you can a coulpe of bottle of redex and 2xcans egr cleaner from halfruds sprayed into air intake problem sorted for me fo rnow anyway been 3/4 months no overboost limp mode.
New egg fitted,did let the get low then refilled with super diesel,going to fill it up again tonight with she'll v max then replace the fuel filter again.Thanks
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I've had fresh Diesel fuel straight from the pump that was blue....nothing wrong with it. In Europe their V-Power & general Super Unleaded fuels are VERY deep blue. It's just a dye I assume. A bit like how you get red diesel for agricultural use only.
If it was black then you would have an issue (oil mixing with the diesel), but blue is normal.
P0234 is an overboost issue, nothing fuel related.
http://wiki.ross-tech.com/wiki/index.php/16618/P0234/000564
Thanks for your reply on diesel colour and for the link.
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Well after having it back to the garage to have code read and diagnostics done,it has been confirmed that the turbo is fubared.Just waiting for the quote .
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neil ratcliffe
coupe rebuild master
Booked into garage tuesday.
Replacement garrett turbo,new oil feed pipe,engine flush,new oil and filter,12months warranty parts and labour £700 incl previous bill for code reading.Happy with that.
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Replacement garrett turbo,new oil feed pipe,engine flush,new oil and filter,12months warranty parts and labour £700 incl previous bill for code reading.Happy with that.
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