LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2005 >> Outback XT Limited, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1) >> Enable Condition >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Enable Condition: Notes

ENABLE CONDITION

Secondary Parameters Enable Conditions
Accumulative time of canister purge after engine starting >/= 19.9 seconds
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
Learning value of evaporation gas density < 0.20
Sub feedback In operation
Evaporative system diagnostic Not in operation
Difference between actual and target time lambda < 0.10 1000 milliseconds or more
Vehicle speed >/= 70.4 km/h (44 MPH)
Amount of intake air 12 - 40 g (0.35 <-- --> 1.41 oz)/s
Engine load change every 0.5 engine revs. < 0.02 g (0.0007 oz)/rev
Rear O2 output change from below 600 mV to over Experienced after fuel cut
After starting engine >/= 235 seconds