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Home >> Subaru >> 2021 >> WRX STI >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (2.5L) >> Oxygen Sensor Relay >> Removal
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Oxygen Sensor Relay: Removal

  1. Disconnect the ground cable from battery.
  2. Remove the instrument panel lower cover. Refer to EXTERIOR/INTERIOR TRIM>INSTRUMENT PANEL LOWER COVER>REMOVAL .
  3. Remove the bolts and nuts securing the fuse block and move down the fuse block.
    G10264886Courtesy of SUBARU OF AMERICA, INC.
  4. Remove the oxygen sensor relay from the relay block.
    G10264887Courtesy of SUBARU OF AMERICA, INC.