A4 (B6 Platform) Discussion Discussion forum for the B6 Audi A4 produced from 2002-2005

code P0171 and P0507....

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Old Mar 27, 2008 | 05:37 PM
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Default code P0171 and P0507....

Need some help here. I know what the codes mean but I cant locate the problem. No split hoses, etc...When I put it in park the RPMs are low (sputtering almost). Driving I get hesitation. Any ideas?
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Old Mar 27, 2008 | 06:07 PM
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Coilpack starting to go? Do you have a CEL?
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Old Mar 27, 2008 | 07:01 PM
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yes a solid CEL.
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Old Mar 27, 2008 | 07:11 PM
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Default If it starts flashing, pull over into a nice spacious parking lot & wait for a tow truck

'cause you ain't goin' very far. Been there twice now. However, last time I performed the isolation test to see which one was bad. As a result, the first 3 CPs I pulled caused misfire codes due to my checking, & my dealer replaced all of them with the "R" revision under warranty! They even threw in a new fuel pump too (that I didn't even know was bad).
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Old Mar 27, 2008 | 07:22 PM
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Go to the dealership ASAP and get some spare coils...they're on their way out
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Old Mar 27, 2008 | 07:59 PM
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Default There are so many more possibilities than just coilpacks...

MAF being one of them.
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Old Mar 27, 2008 | 08:01 PM
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Default This is not a first for me...I have had my fair share of coilpacks die.

Just have never had one failing. I can only hope that's what this is.
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Old Mar 27, 2008 | 09:21 PM
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Default I understand that

But with the symptoms that you're describing, and the lack of any torn hoses, leads me to believe that that's what the cause is. I haven't had a MAF go on me yet so I'm not sure of the symptoms first hand
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Old Mar 27, 2008 | 10:30 PM
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Default Ahh, I see.

Hopefully it is just a CP.
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