Replacing Heated Oxygen Sensor 1 - Step-by-Step Guide
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor (HO2S) 1 Replacement
HEATED OXYGEN SENSOR (HO2S) 1 REPLACEMENT
TOOLS REQUIRED
J 39194-B Heated Oxygen Sensor Wrench
NOTE:
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When replacing the HO2S perform a code clear with a scan tool, regardless of whether or not a DTC is set. Performing a code clear will reset the
HO2S resistance learned value. Failure to perform a code clear may result in an HO2S failure.
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Refer to Heated Oxygen and Oxygen Sensor Notice in Service Precautions.
REMOVAL PROCEDURE
1. Disconnect the heated oxygen sensor (HO2S) electrical connector (5) from the following:
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The engine wiring harness electrical connector
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The camshaft cover
2. Using the J 39194-B remove the HO2S from the exhaust manifold.
NOTE: Refer to Excessive Force and Oxygen Sensor Notice in Service Precautions.
INSTALLATION PROCEDURE
IMPORTANT: Use special anti-seize compound on the HO2S threads. The compound consists of graphite suspended in fluid and glass beads. The
graphite burns away, but the glass beads remain, making the sensor easier to remove. New service sensors already have the compound applied to the
