How To Test O2 Sensor With Multimeter

If you are testing an o2 sensor near the catalytic converter lift your vehicle using a floor jack and. There should be four pins. The voltage of the o2 sensor will fluctuate between 100 and 1000 millivolts which is 01 and 10 volts so having a quality volt meter is important.
how to test o2 sensor with multimeter

Youll need to use a wire piercing probe to accomplish this.

How to test o2 sensor with multimeter. Step 2 next start and run the engine at idle until warm about 15 minutes. Give the car approximately twenty minutes to obtain the optimal temperatures. The oxygen sensor in your car is constantly monitoring oxygen content in exhaust gases from your engine. Set the multimeter to test the circuit using the best scale available on your device.

Here is a quick video i made on how you can test an oxygen sensor and also what different types of sensors are out there and whats the job of each wire on these sensors. The technician will also require to use a multimeter for testing the oxygen sensor. Look to the sensor side of the connector. These are the test steps.

Tools needed to perform these tests. Heres all you need to know about o2 sensors. The other two pins are the pins that are used for the signal of the oxygen sensor. Turn off the engine and set your voltmeter to the mv millivolt dc scale.

If you are looking for the cause of an engine performance problem a sudden increase in gasoline consumption or if. Connect the negative lead from the digital voltmeter to a good solid ground point on the chassis of the vehicle. What is an o2 sensor the most common faulty symptoms as well as how to test one and replace it when needed. Step 1 once the oxygen sensor sensing wire has been located connect a volt meter to the feedback wire and ground.

Once you have the appropriate voltmeter on hand and have located the sensor warm up your car engine to operating. Ignite the car and leave it to warm up until it reaches operating temperatures. Links to tools and. 2connect your multimeter to oxygen sensor wire.

This helps the vehicle computer adjust for the proper fuelair mixture which affects drivability. 1set your multimeter to volts dc mode. 3start the engine and let it warm up till it. Remember your multimeter must be a 10 megohm impedance type.

The first two are the pins that are wired to the heating element. Step 6 turn the voltmeter on and set it to the 1 volt scale. Select the millivolt operation on the voltmeter.