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Home >> Subaru >> 2015 >> Forester 2.0XT Premium >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection Fuel Systems (H4DOTC) >> 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
    G08315454Courtesy of SUBARU OF AMERICA, INC.
    Terminal No. Standard
    1 and 2 2.2+0.45 -0.22 Ω (when 20°C (68°F))
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