LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2007 >> 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
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Enable Condition

ENABLE CONDITION

Secondary Parameters Enable Conditions
Accumulated time of canister purge operation after engine starting ≥ 5 seconds
Battery voltage > 10.9 V
Barometric pressure > 75.1 kPa (563 mmHg, 22.2 inHg)
Engine coolant temperature ≥ 70°C (158°F)
Estimated catalyst temperature ≥ 520°C (968°F) (AT) ≥ 530°C (986°F) (MT)
Misfire detection every 200 rotations < 5 times
Learning value of evaporation gas density < 0.20
Sub feedback In operation
Evaporative system diagnosis Not in operation
Time of difference (< 0.10) between actual and target lambda 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 oxygen output change from 600 mV or lower to 600 mV or higher Experienced after fuel cut
After engine starting ≥ 230 seconds