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Home >> Subaru >> 2018 >> WRX STI >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel Injection System (STI) >> 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. Ref. 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.
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  4. Remove the oxygen sensor relay from the relay block.
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