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PO171 Code - AGAIN

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Old Jul 10, 2017 | 12:49 PM
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tlacek7500's Avatar
tlacek7500
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Default PO171 Code - AGAIN
2008 Audi A4 - throwing the same code for several things that I've had fixed: cam follower, oil leak from head, diverter valve, etc.

should I just get a vacuum test?
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Old Jul 11, 2017 | 05:46 AM
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lyleswk
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See link for troubleshooting guide. None of what you had worked on would have effected that code. That code is usually a vacuum leak, so yes, look for vacuum leak(s).

16555/P0171/000369 - Ross-Tech Wiki
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