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Home >> Subaru >> 2019 >> Outback 2.5i >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Continuously Variable Transmission (Diagnostics) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P0721: Output Shaft Speed Sensor Circuit Range/Performance >> Diagnostic Method

Diagnostic Method

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment value 

Malfunction Criteria Threshold Value
|Vehicle speed (calculated from front output shaft speed) - Vehicle speed (from vehicle dynamics control module)| > 10 MPH

Time needed for diagnosis:  5 seconds

Malfunction indicator light illumination:  Illuminates as soon as a malfunction occurs.