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Home >> Subaru >> 2021 >> Ascent Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle (Diagnostics) >> Inspection Mode >> Procedure >> Inspection Mode A
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Inspection Mode A

DTC Item Condition
P0604 INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR -
P0605 INTERNAL CONTROL MODULE READ ONLY MEMORY (ROM) ERROR -
P0613 TCM PROCESSOR -
P062F INTERNAL CONTROL MODULE EEPROM ERROR Perform inspection mode A twice
P0705 TRANSMISSION RANGE SENSOR "A" CIRCUIT (PRNDL INPUT) -
P0712 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT LOW -
P0842 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT LOW -
P0843 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "A" CIRCUIT HIGH -
P0847 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "B" CIRCUIT LOW -
P0848 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH "B" CIRCUIT HIGH -
P0890 TCM POWER RELAY SENSE CIRCUIT LOW -
P0962 PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT LOW -
P0963 PRESSURE CONTROL SOLENOID "A" CONTROL CIRCUIT HIGH -
P0966 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT LOW -
P0967 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT HIGH -
P2530 IGNITION SWITCH RUN POSITION CIRCUIT -
P2721 PRESSURE CONTROL SOLENOID "D" CONTROL CIRCUIT HIGH -
P2729 PRESSURE CONTROL SOLENOID "E" CONTROL CIRCUIT LOW -
P2730 PRESSURE CONTROL SOLENOID "E" CONTROL CIRCUIT HIGH -

Diagnostic procedure: 

  1. Check the readiness code using Subaru Select Monitor and confirm that the diagnosis is not completed.
  2. Start the engine.
  3. Depress the brake pedal and move the select lever to each range at an interval of five seconds.
    NOTE: Move the select lever in the following order: "P" → "R" → "N" → "D" → "N" → "R" → "P".