Repair 7

How to Remove Oxygen Sensors on a Truck

When an oxygen sensor (also called an O2 sensor) is malfunctioning on a truck, the engine control unit isnt getting the proper information it needs to run the engine; as a result, the car may run poorly. The fix is to replace the sensor, and its a lot easier to do than one might think. This job should take about 30 minutes to do, depending on the year, make and number of O2 sensors on the truck.

Instructions

1

Lift up the vehicle using the jack and place it on jack stands. Make sure the vehicle is secure before you crawl underneath it.

2

Crawl underneath the truck and find the oxygen sensors. These are little metal tubes that stick out perpendicular to the exhaust tubing, typically near the catalytic converters. They also have two wires coming out of the ends, making it the only thing with wiring leading into the exhaust. Unplug the wiring to the O2 sensor using your hands.

3

Place the O2 sensor socket on the 3/8-inch ratchet and put the socket on the sensor so that the wiring is running out of the slot in the socket body. Unbolt the sensor and place it to the side. Repeat this process for any other O2 sensors that you want to remove.