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Home >> Subaru >> 2018 >> Impreza Base, 4D Wagon, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control/Fuel System >> Rear Oxygen Sensor >> Inspection
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Rear Oxygen Sensor: Inspection

  1. Check that the rear oxygen sensor has no deformation, cracks or other damages.
  2. Measure the resistance between rear oxygen sensor terminals.
Fig 1: Locating Rear Oxygen Sensor Connector Terminals
G11252908Courtesy of SUBARU OF AMERICA, INC.
Terminal No. Standard
1 and 2 5.6+0.8M-0.6 Ω (when 20°C (68°F))
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