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Home › Pontiac › 2003 › Vibe Base, FWD, Automatic › Repair and Diagnosis › Engine Performance › System › Engine Control System - Self-Diagnostics › Diagnostic Tests › DTC P0171: Fuel Trim System Lean › Conditions For Running DTC

Conditions For Running DTC

Engine coolant temperature is more than 158°F (70°C).
Engine is running at steady speed.
Engine is operating in closed loop.