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Home >> Honda >> 2009 >> S2000 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Advanced Diagnostics >> DTC P1172: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Circuit Out of Range High >> Driving Pattern
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Driving Pattern

Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on, then let it idle.