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Home › Cadillac › 2006 › STS V › Repair and Diagnosis › Engine Performance › System › Engine Control System - 4.4L - DTC P0010 To P0175 › DTC P0171 or P0172 › DTC Descriptor

DTC Descriptor

DTC P0171

Fuel Trim System Lean Bank 1

DTC P0172

Fuel Trim System Rich Bank 1

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