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Audi
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2001
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S4 Quattro Wagon (8D5) V6-2.7L Turbo (APB)
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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Manufacturer Code Charts
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Engine Control System
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DTC 16815
DTC 16815
DTC P0421 - P0431:
