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Home >> Subaru >> 2004 >> Baja Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0731: Gear 1 Incorrect Ratio >> Diagnostic Method

Diagnostic Method

Perform the diagnosis when the conditions below are not completed for more than 40 milliseconds on normal control.

  1. Vehicle speed is more than 10 km/h (6 MPH).
  2. Throttle sensor is more than a certain angle.
  3. Shifted to "D", "3", "2" or "1" range, and range signal is normal.
  4. More than 1 second passed after shift change finished.

Judgment Value 

Fig 1: Threshold Value Table
G00899308Courtesy of SUBARU OF AMERICA, INC.
  1. Time Needed for Diagnosis:  3 seconds
  2. Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.