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Home >> Subaru >> 2009 >> Tribeca Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H6DO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1) >> General Driving Cycle

General Driving Cycle

Perform the diagnosis only once at a constant 60 km/h (37.3 MPH) or higher.