FixVault
Home › Subaru › 2011 › Impreza Outback Sport, Standard › Repair and Diagnosis › Engine Performance › Engine Control Systems › Fuel Injection System (Fuel Systems) (H4SO) › Front Oxygen (A/F) Sensor › Inspection

Front Oxygen (A/F) Sensor: Inspection

  1. Check that the front oxygen (A/F) sensor has no deformation, cracks or other damages.
  2. Measure the resistance between front oxygen (A/F) sensor terminals.
    Fig 1: Measuring Resistance Between Front Oxygen (A/F) Sensor Terminals
    G07662810Courtesy of SUBARU OF AMERICA, INC.
    TERMINALS RESISTANCE REFERENCE CHART

    Terminal No. Standard
    4 and 6 2.4±0.24 Ω (20°C (68°F))
About FixVault