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10-03-2009, 11:21 PM | #1 | |
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Location: Kent, Washington
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Check engine Codes:need help
I have a 2002 audi a4 and I need to get the check engine light off, I have these codes can someone help me to find out what in the world I need to change or do I just guess. It is
P0420: BBCatalyst system efficiency below threshold bank 1 P0171: BBSystem too lean-bank 1 then there is other ones like a faulty cylinder If anyone knows what to fix for this specific car please let me know, it will be helpful. |
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10-19-2009, 10:49 PM | #2 | |
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Re: Check engine Codes:need help
P0171 is almost always a vacuum leak in the intake- or possibly a messed up o2 sensor. These both need tested.
The other one is pretty well cut and dried that you need a new cat. converter. Not too many ways to get around this one. Please post all of them- also let us know how it is running. |
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01-21-2010, 09:14 PM | #3 | |
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Re: Check engine Codes:need help
Thanks man,
It was for my freind. Ya he got rid of it cause it had too many problems with the electronics. But still thank you. |
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