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Home >> Subaru >> 2013 >> Legacy Base, Automatic CVT Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P015A O2 Sensor Delayed Response - Rich To Lean (Bank 1 Sensor 1) >> Enable Conditions
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Enable Conditions

DIAGNOSTIC METHOD 1

Secondary Parameters Enable Conditions
Battery voltage > 10.9 V
Closed loop control with main feedback Operation
Front oxygen (A/F) sensor impedance ≥ 0 Ω
  and
  < 87 Ω
Elapsed time after starting the engine ≥ 40000 ms
Engine coolant temperature ≥ 0 °C (32 °F)
Engine speed ≥ 1000 rpm
Amount of intake air ≥ 10 g/s (0.35 oz/s)
After fuel cut ≥ 3000 ms
Idle switch OFF
DIAGNOSTIC METHOD 2

Secondary Parameters Enable Conditions
Battery voltage > 10.9 V
Closed loop control with main feedback Operation
Front oxygen (A/F) sensor impedance ≥ 0 Ω
  and
  < 87 Ω
Elapsed time after starting the engine ≥ 40000 ms
Engine coolant temperature ≥ 0 °C (32 °F)
Engine speed ≥ 1000 rpm
Amount of intake air ≥ 10 g/s (0.35 oz/s)
After fuel cut ≥ 3000 ms
Learning value of EVAP conc. during purge < 0.2
Total time of operating canister purge ≥ 20 s
Engine load change < 0.02 g/rev (0 oz/rev)
Idle switch OFF
DIAGNOSIS METHOD 3 (MT MODEL ONLY)

Secondary Parameters Enable Conditions
Battery voltage > 10.9 V
Closed loop control with main feedback Operation
Front oxygen (A/F) sensor impedance ≥ 0 Ω
  and
  < 87 Ω
Elapsed time after starting the engine ≥ 120000 ms
Engine coolant temperature ≥ 60 °C (140 °F)
Vehicle speed ≥ 40 km/h (24.9 MPH)
Engine speed ≥ 1000 rpm
  and
  < 4000 rpm
Amount of intake air ≥ 7.5 g/s (0.26 oz/s)
  and
  < 40 g/s (1.41 oz/s)
Learning value of EVAP conc. during purge < 0.2
Catalyst depletion diagnosis Not under diagnosis