isuzu Workshop Repair Guides

Isuzu Workshop Service and Repair Manuals

Fuel Control Heated Oxygen Sensors|Page 343 > < Fuel Control Heated Oxygen Sensors|Page 341
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Oxygen Sensor: Service and Repair

REMOVAL

1. Disconnect the negative battery cable.
2. Locate the two oxygen sensors.

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Bank 1 sensor 1 is mounted on the exhaust pipe ahead of the catalytic converter.

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Bank 1 sensor 2 is mounted behind the catalytic converter.

3. Disconnect the pigtail from the wiring harness.

NOTE:  The pigtail is permanently attached to the sensor. Be careful not to pull the wires out.

CAUTION:  Do not use a torch to remove a Heated Oxygen Sensor (HO2S) unless the sensor is being replaced. Using a torch could damage the
sensor.

4. Remove the sensor from the exhaust pipe.

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Because of the expansion and contraction of the metal in the exhaust system over time, this may be difficult if the engine temperature is below
48°C (120°F).

Fuel Control Heated Oxygen Sensors|Page 343 > < Fuel Control Heated Oxygen Sensors|Page 341