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Lanos SE, Standard
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Repair and Diagnosis
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Engine Performance
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Engine Controls - Self-Diagnostics
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DTC Diagnostic Tests
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DTC P1171: Fuel Trim System Lean During Power Enrich
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Conditions For Setting DTC
Conditions For Setting DTC
No related malfunctions (see DTC P0131)
Engine is operating in Closed Loop.
Oxygen Sensor (O2S1) voltage is less than 400 millivolt in PE mode.
Engine is in power enrichment mode.
Air-to-fuel ratio is less than 13.5:1.