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Home >> Subaru >> 2019 >> WRX STI >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (STI) (1 Of 4) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P015A: A/F/O2 Sensor Delayed Response - Rich To Lean Bank 1 Sensor 1 >> Execution Condition

Execution Condition

Diagnostic method 1 

Secondary parameters Execution condition
Battery voltage ≥ 10.9 V
Barometric pressure >75.1 kPa (563 mmHg, 22.2 inHg)
Time of main feedback operation ≥3000 ms
Engine speed ≥1000rpm
Amount of intake air ≥10g/s (0.35oz/s)
SECONDARY PARAMETERS AND EXECUTION CONDITION - DIAGNOSTIC METHOD 2

Secondary parameters Execution condition
Battery voltage ≥ 10.9 V
Barometric pressure ≥ 75.1 kPa (563 mmHg, 22.2 inHg)
Main feedback In operation
Vehicle speed >40km/h (24.9MPH)
Engine speed ≥1000rpm and
< 3200rpm
Amount of intake air ≥10g/s (0.35oz/s)
and
< 30g/s (1.06oz/s)
Status of catalytic converter monitor Not under diagnosis