Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Subaru >> 2004 >> Baja Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0134: O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1) >> Diagnostic Method

Diagnostic Method

Judge NG when the continuous time of completing all the malfunction criteria below becomes more than the time (5 seconds) needed for diagnosis.

Judgment Value 

Fig 1: Threshold Value Table
G00898610Courtesy of SUBARU OF AMERICA, INC.
  1. Time Needed for diagnosis: 

    5 seconds

  2. Malfunction Indicator Light Illumination: 

    Illuminates as soon as malfunction occurs.