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Home >> Subaru >> 2024 >> WRX Base >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Continuously Variable Transmission (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P170B: Rear Output Shaft Speed Sensor Circuit Range/Performance >> General Description >> 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 SPECIFICATION

Malfunction Criteria Threshold Value
ABS(1) (Vehicle speed (calculated from measured rear output shaft speed) - Vehicle speed (calculated from wheel speed sensor)) Exceeds 10 MPH
(1) Absolute value

Time needed for diagnosis:  5 s

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