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Home >> Subaru >> 2015 >> WRX Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) (Except STI) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P015A O2 Sensor Delayed Response - Rich To Lean (Bank 1 Sensor 1) >> Enable Conditions

Enable Conditions

Diagnostic method 1 and 2 

ENABLE CONDITIONS

Secondary Parameters Enable Conditions
Battery voltage ≥ 10.9 V
Operation time of main feedback ≥ 5 s
Engine speed ≥ 1000 rpm
Amount of intake air ≥ 10 g/s (0.35 oz/s)

DIAGNOSIS METHOD 3 (MT MODEL ONLY) 

ENABLE CONDITIONS

Secondary Parameters Enable Conditions
Battery voltage ≥ 10.9 V
Main feedback In operation
Vehicle speed ≥ 40 km/h (24.9 MPH)
Engine speed ≥ 1000 rpm
and
< 4000 rpm
Amount of intake air ≥ 7.5 g/s (0.3 oz/s)
and
< 40 g/s (1.4 oz/s)
Catalyst depletion diagnosis Not under diagnosis