How To Change 02 Sensor On A 200 Chevy Malibu

Symptoms

Bank check Engine Light is ON
A decrease in fuel economy
Engine Hesitation or misfire
Rough Idling

What you will need

Chevrolet Oxygen Sensor
Oxygen Sensor Socket
Ratchet Wrench
10mm socket

Procedure

Park the Chevrolet on level ground and set the parking brakes.
Pull the hood release under the dashboard on the driver's side.
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Disconnect the negative bombardment terminal. Remove the plastic encompass. Loosen the 10mm nut. Remove the negative clench from the bombardment.
Locate the oxygen sensor on the exhaust manifold. Downstream sensors Bank 1 Sensor two and Bank 2 Sensor two can be accessed from under the vehicle. Do non touch the sensor or the heat shield until the engine cools down.
Disconnect the O2 sensor. Printing the connector and pull it away to unplug the oxygen sensor. Use a flat head screwdriver to press the locking tab on the connector before pulling information technology.
Place the oxygen sensor socket on the sensor and break it loose. If the sensor cannot exist loosened spray penetrating oil and let it sit for at to the lowest degree ten minutes. This volition brand information technology easier to remove the old Chevrolet oxygen sensor.
Install the new oxygen sensor. Tighten the new Chevrolet oxygen sensor to the recommended torque. If you are unsure of the right torque specs, call your local Chevy dealer.
Connect the oxygen sensor wire harness by plugging information technology in. If you are using a universal oxygen sensor, you will need to use the diagram that came with the sensor to discover out which wires to connect.
Reconnect the battery negative cable.

This guide applies to vehicles such as Spark, Sonic, Bolt, Volt, Cruze, Malibu, Impala, Camaro, Corvette, City Express, Trax, Equinox, Traverse, Tahoe, Suburban, Colorado, Silverado, Sonic, Blazer, Astro, HHR, Uplander, Barrage, etc.

All Chevrolet cars take at least ii sensors, with vi and 8 cylinder engines having up to iv. After you read the fault codes, you will get a code that points to a bad oxygen sensor, such as Banking company one Sensor one. This will allow you to identify which one of the oxygen sensors needs to be replaced.