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Subaru
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2019
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WRX Base
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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) (Except For STI) (2 Of 4)
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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
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DTC P0400: EGR "A" Flow
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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)
Intake air temperature
≥ 0°C (0°F)
Engine speed
≥ 1300 rpm
to
< 5000 rpm
Vehicle speed
≥ 34 km/h (21.1 MPH)
Time of fuel shut-off operation
≥ 3 s
Neutral switch
OFF