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Home >> Subaru >> 2021 >> WRX Limited, Automatic CVT Trans >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Continuously Variable Transmission (Diagnostics) >> Drive Cycle >> Procedure >> Drive Cycle C

Drive Cycle C

Unit of measure Item Condition
P0500 Vehicle Speed Sensor "A" Circuit -
P0720 Output Shaft Speed Sensor Circuit -
P0721 Output Shaft Speed Sensor Circuit Range/Performance -
P0970 Pressure Control Solenoid "C" Control Circuit Low -
P0971 Pressure Control Solenoid "C" Control Circuit High -
P0973 Shift Solenoid "A" Control Circuit Low -
P0974 Shift Solenoid "A" Control Circuit High -
P0976 Shift Solenoid "B" Control Circuit Low -
P0977 Shift Solenoid "B" Control Circuit High -
P1706 Rear Output Shaft Speed Sensor Circuit No Signal -
P170B Rear Output Shaft Speed Sensor Circuit Range/Performance -
P2158 Vehicle Speed Sensor "B" Circuit -
P2746 Intermediate Shaft Speed Sensor "B" Circuit Range/Performance -
P2747 Intermediate Shaft Speed Sensor "B" Circuit No Signal -
P2750 Intermediate Shaft Speed Sensor "C" Circuit Range/Performance -
P2751 Intermediate Shaft Speed Sensor "C" Circuit No Signal -
P2763 Torque Converter Clutch Pressure Control Solenoid Control Circuit High Perform the drive cycle A, then perform the drive cycle C.
P2764 Torque Converter Clutch Pressure Control Solenoid Control Circuit Low -
P2769 Torque Converter Clutch Circuit Low -
P2770 Torque Converter Clutch Circuit High -

Diagnostic procedure: 

  1. Start the engine.
  2. Accelerate slowly to a legal speed, and then decelerate slowly to a stop.