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2017
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WRX STI
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Repair and Diagnosis (Single Page)
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Engine Performance
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System
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Engine Control System (Diagnostics) (P000A To P015B) (2.5L)
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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
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DTC P014C A/F/O2 Sensor Slow Response - Rich To Lean Bank 1 Sensor 1
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Execution Condition
Execution Condition
Secondary parameters
Execution condition
Battery voltage
≥ 10.9 V
Barometric pressure
> 75.1 kPa (563 mmHg, 22.2 inHg)
Closed loop control with main feedback (3000 ms or more)
In operation
Engine speed
≥ 1000 rpm
Amount of intake air
≥ 10 g/s (0.35 oz/s)
Accelerator pedal position
> 0%