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Home >> Subaru >> 2011 >> Legacy Premium, Automatic CVT >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0172 System Too Rich (Bank 1) >> Enable Condition

Enable Condition

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Secondary Parameters Enable Conditions
A/F main learning system In operation
Engine coolant temperature ≥ 72 °C (161.6 °F)
Engine load change ≤ 0.02 g/rev (0 oz/rev)
Learning value of EVAP conc. < 0.1
Cumulative time of canister purge after engine start ≥ 20 s
Continuous period after canister purge starting ≥ 29884 ms
Engine load ≥ Value of Map 1
MAP 1 REFERENCE CHART

Engine speed (RPM) Idling 700 1200 1600 2000 2400 2800 3200 3600 4000 4400
Measured value (g (oz)/rev) na 0.230 (0.01) 0.217 (0.01) 0.213 (0.01) 0.210 (0.01) 0.210 (0.01) 0.220 (0.01) 0.223 (0.01) 0.240 (0.01) 0.252 (0.01) 0.261 (0.01)