How to Replace an Oxygen Sensor in a Dodge Caravan

by Alibaster Smith

All Dodge Caravans are equipped with at least one oxygen sensor, or O2 sensor for short. The sensor measures the mix of air and fuel going into the engine. It ensures that the van isn't running too rich or too lean. The O2 sensor sends information to the ECU, which allows it to adjust the fuel mix as necessary. By adjusting the mix, the computer is able to maximize performance, while minimizing fuel consumption and emissions.

Step 1

Turn off the vehicle. Make sure that you let the engine cool down completely. This will take several hours.

Step 2

Jack up the front of the Caravan using the front jack point located near the radiator. This will be an extension of the frame.

Step 3

Place jack stands under the pinch welds of the vehicle and lower the van onto the jack stands. The front pinch welds are located directly under the driver and passenger side doors.

Step 4

Get under the Caravan and locate the O2 sensor. This sensor will be sticking out the vehicle's exhaust, either before or after the catalytic converter depending on the year of your van.

Step 5

Unplug the electrical connectors on the O2 sensor/bung.

Step 6

Loosen and remove the O2 sensor with the O2 sensor removal tool. To do this, place the end of the tool over the O2 sensor and turn counterclockwise to loosen.

Step 7

Install the new O2 sensor. Installation is the reverse of removal.

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