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Home >> Mazda >> 2003 >> B2300 Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Fuel System >> Engine Controls [Removal & Installation] >> Engine Sensors & Switches >> Heated Oxygen Sensor >> Removal (B2300, B3000 & B4000)

Removal (B2300, B3000 & B4000)

NOTE: Sensor may be difficult to remove when engine temperature is less than 120°F (48°C). If HO2S is difficult to remove, use rust penetrant to avoid damaging threads.
  1. Disconnect Heated Oxygen Sensor (HO2S) harness connector.
  2. Using appropriate HO2S socket, carefully remove sensor.
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