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Home >> Subaru >> 2019 >> WRX STI Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Continuously Variable Transmission (Diagnostics)) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P0757: Shift Solenoid "B" Stuck On >> Diagnostic Method

Diagnostic Method

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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
Actual pulley ratio (1) change for 1 second > 0.04
Commanded duty of shift up pressure control solenoid > 50%
(1) Actual pulley ratio: Measured primary pulley shaft speed/Measured secondary pulley shaft speed

Time needed for diagnosis:  10 seconds

Malfunction indicator light illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.