P0101 error, black smoke, holds back - AudiForums.com


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Old 01-02-2013, 07:07 AM
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Unhappy P0101 error, black smoke, holds back

Hi.

I have a 2007 A6 C6 2.0tdi.
Today it has started holding back and throwing black smoke out the exhaust when i accelerate.
If you rev it gently it's fine but put your fut down and it misfires and smokes.
The computer shows P0101 which is MAF sensor but I am not convinced.
When cruising its fine and pulls well when the revs are high enough.

I have sourced a MAF but would welcome any suggestions???

Mant thanks.
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Old 04-18-2017, 12:24 PM
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Quote:
Originally Posted by texaspete View Post
Hi.

I have a 2007 A6 C6 2.0tdi.
Today it has started holding back and throwing black smoke out the exhaust when i accelerate.
If you rev it gently it's fine but put your fut down and it misfires and smokes.
The computer shows P0101 which is MAF sensor but I am not convinced.
When cruising its fine and pulls well when the revs are high enough.

I have sourced a MAF but would welcome any suggestions???

Mant thanks.
this is the exact same problem i seem to be having and would appreciate any updates
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Old 04-18-2017, 01:17 PM
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sounds like your turbo is shot
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Old 04-18-2017, 02:16 PM
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Default turbo

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Originally Posted by twopedalwarrior View Post
sounds like your turbo is shot
thankyou for the reply garage has just advised the same i pray it all goes well will have it sorted soon and post back
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Old 04-19-2017, 11:17 AM
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Originally Posted by Anashuss View Post
this is the exact same problem i seem to be having and would appreciate any updates
Hi.

I sorted it out.

It was the EGR valve. The valve itself has snapped inside so was letting exhaust fumes through all the time, suffocating the engine until the revs got up.

The picture shows the problem. The black disc at the top of the photo is the vavle and should fit in the unit. Cost my about 140 from ebay and 40min to fit. Not a big job.

Hope this helps.
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Old 04-19-2017, 08:00 PM
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nice find
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Old 05-10-2017, 03:39 AM
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Default Re:Update vehicle repaired!!

Hi guys many many thanks for all of your help after spending so much time and money it did turn out to be the egr a small pin was snapped i know somebody did suggest this to me earlier unfortunately i cannot find the post to let them know. I will aim to attach a picture of the specific part which only cost 60 second hand and as soon as it was replaced the car works wonders!!! Better than before!!
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Old 05-10-2017, 03:43 AM
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[QUOTE=texaspete;1417979]Hi.

I have a 2007 A6 C6 2.0tdi.
Today it has started holding back and throwing black smoke out the exhaust when i accelerate.
If you rev it gently it's fine but put your fut down and it misfires and smokes.
The computer shows P0101 which is MAF sensor but I am not convinced.
When cruising its fine and pulls well when the revs are high enough.

I have sourced a MAF but would welcome any suggestions???

Hi i would just like to say many thanks for your help i had the exact same issue in the end and really appreciate your prompt reply
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