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Home >> Subaru >> 2005 >> Outback R >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H6DO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1) >> Enable Condition >> Notes

Enable Condition: Notes

ENABLE CONDITION

Secondary Parameters Enable Conditions
Battery voltage > 10.9 V
Atmospheric pressure > 75.1 kPa (563 mmHg, 22.2 inHg)
Engine coolant temperature >/= 70°C (158°F)
Catalyst warm-up counter on Map 2 >/= 8000
Misfire detection during 200 engine revs. < 5 times
Sub feedback Operating
Evaporative system diagnostic Not in operation
Difference between actual and target time lambda < 0.10 1000 milliseconds or more
Vehicle speed >/= 70 km/h (43 MPH)
Amount of intake air 10 <--> 40 g (0.35-1.41 oz)/s
Rear oxygen output change from below 600 mV to over Experienced after fuel cut
Absolute valve of engine load change >/= 0.02 g (0.007 oz)/rev
Accumulated time of canister purge operation >/= 5 seconds
Learning valve of evaporation gas density >/= 0.2
After engine starting >/= 205 seconds