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Home >> Subaru >> 2013 >> Outback Base, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1) >> Enable Condition
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Enable Condition

ENABLE CONDITIONS

Secondary Parameters Enable Conditions
Battery voltage ≥ 10.9 V
Atmospheric pressure ≥ 75 kPa (563 mmHg, 22.2 inHg)
Engine coolant temperature ≥ 60 °C (140 °F)
Estimated catalyst temperature ≥ 535 °C (995 °F) (AT model)
  ≥ 535 °C (995 °F) (MT model)
Misfire detection every 200 rotations < 65535 time(s)
Learning value of evaporation gas density < 0.2
Sub feedback In operation
Evaporative system diagnosis Not in operation
Time of difference (< 0.10) between actual lambda and target lambda ≥ 1000 ms
Vehicle speed > 40 km/h (24.9 MPH)
Amount of intake air ≥ 8 g/s (0.28 oz/s)
  and
  < 45 g/s (1.59 oz/s)
Engine load change every 0.5 engine revs. < 0.02 g/rev (0 oz/rev)
Rear oxygen output change from 660 mV or less to 660 mV or more Experienced after fuel cut
Elapsed time after starting the engine ≥ 230 s
Purge execution calculated time ≥ 20 s