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Removal - Upstream 1/1 4 Cylinder

The engine uses 1 heated oxygen sensors in the exhaust manifold.

CAUTION: When disconnecting the sensor electrical connector, do not pull directly on wire going into sensor.

Remove the negative battery cable.
Disconnect the heated oxygen sensor electrical connector.
Use a socket such as Snap-On YA8875 or a crow foot wrench to remove oxygen sensor. See Figure.