Leganza SX L4-2.2L DOHC D-TEC MFI (1999)
Oxygen Sensor: Service and Repair
Oxygen Sensor (02S 1)
OXYGEN SENSOR (O2S 1)
Removal Procedure
1. Disconnect the negative battery cable.
NOTE: The oxygen sensor (O2S 1) uses a permanently attached pigtail and connector. This pigtail should not be removed from the O2S 1.
Damage or removal of the pigtail or the connector could affect proper operation of the O2S 1. Take care when handling the O2S 1. Do not drop
the O2S 1.
2. Disconnect the O2S 1 connector.
NOTE: The oxygen sensor may be difficult to remove when engine temperature is below 48 °C (118 °F). Excessive force may damage threads in
the exhaust manifold.
3. Carefully remove the O2S 1 from the exhaust manifold.
Installation Procedure
Important: A special anti-seize compound is used on the oxygen sensor threads. This compound consists of a liquid graphite and glass beads. The
graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or serviced sensors will already have the compound
applied to the threads. If a sensor is removed from any engine and is to be reinstalled, the threads must have an anti-seize compound applied before
reinstallation.
