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Home >> Subaru >> 2006 >> Baja Turbo, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0420 - Catalyst System Efficiency Below Threshold (Bank 1) - >> Enable Condition

Enable Condition

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ENABLE CONDITION

Secondary Parameters Enable Conditions
Idle switch off after coolant temp 71°C (160°F) 180 seconds
Closed loop control continuous 5 seconds Not in standstill
Vehicle speed 24 - 140 km/h (15 - 87 MPH)
Injector pulse (AT) 0.832 - 4.096 milli-seconds
(MT) 0.384 - 3.840 milli-seconds
Closed loop control rear oxygen sensor In operation
Engine misfire during 400 ignitions ≤ 5 times
Lambda 0.625 - 1.375
Engine speed (AT) 600 - 3000 rpm
(MT) 1000 - 3300 rpm
Neutral position OFF
Engine coolant temperature ≥ 75°C (167°F)
Throttle position (AT) < 14.72°
(MT) < 17.60°
Average AIA during diagnosis ≥ 27.0 kg (60 lb)/h
Integrated fluctuating AIA during diagnosis > 160kg (353 lb)/h
After fuel shut-off finished 1 seconds or more
Accumulated amount of intake air (AIA) (start condition) 0.84 kg (1.85 lb)/60 seconds
Vehicle speed (continuous 80 seconds) (start condition) ≥ 20 km/h (12 MPH)
Injector pulse (continuous 40 seconds) (start condition) 1.34 - 4.22 milliseconds
Vehicle speed (continuous 70 seconds) (start condition) ≥ 74 km/h (46 MPH)