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Home › Buick › 2005 › LaCrosse CX › Repair and Diagnosis › Engine Performance › System › Engine Control System - 3.8L (DTC P0140 To DTC 0412) › Diagnosis › DTC P0171 › DTC Descriptor

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0171 Fuel Trim System Lean Bank 1

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