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Home >> Subaru >> 2008 >> Outback Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0172 System Too Rich (Bank 1) >> Enable Condition >> Notes
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Enable Condition: Notes

ENABLE CONDITION

Secondary Parameters Enable Conditions
A/F main learning system In operation
Engine coolant temperature ≥ 75°C(168°F)
Amount of intake air ≥ Value from Map 5
Intake air change during 0.5 engine revs. ≤ 0.02 g (0.001 oz)/rev
Learning value of EVAP cone, during purge < 0.15
Cumulative time of canister purge after engine start 20 seconds or more
Continuous period after canister purge starting 30 seconds or more