Can you bypass the oxygen sensor?
Bypassing an oxygen sensor–also called an O2 sensor–can only be done using a dummy O2 sensor. Oxygen sensors are part of the vehicle’s emissions control system and it may or may not be legal to replace the O2 sensor with a dummy sensor.
How do I turn off the oxygen sensor?
How to Disable an O2 Sensor
- Locate the O2 sensors on your vehicle. Every vehicle has at least one O2 sensor but most have four.
- Follow the green wire from the O2 sensor, and locate the wiring harness that connects to it. Unplug the O2 sensor from the wiring harness, and tie the green wire into a loop.
What does the oxygen sensor on a Toyota do?
If you notice a drop in your Toyota’s fuel economy, the vehicle runs rough and the exhaust smells strong or the engine is hard to start, you may have a faulty oxygen sensor. The oxygen, or O2, sensor reads the percentage of oxygen in the exhaust coming from the engine and sends this information to the computer.
What to do if your O2 sensor fails?
If an O2 sensor fails, the engine will not run properly. Locate the O2 sensor connector in the engine compartment of your Toyota. Start the engine and let it run until it rests at a normal operating temperature.
What does the O2 sensor on my car look like?
The O2 sensor looks like a white spark plug and has a green wire extending out of the top of it. Follow the green wire from the O2 sensor, and locate the wiring harness that connects to it. Unplug the O2 sensor from the wiring harness, and tie the green wire into a loop.
What should the voltage be on the O2 sensor?
Set the meter to 12VDC and watch the display. Note the readings on the meter. The voltage should fluctuate between .40 and .60 volts rapidly. If it does not, replace the O2 sensor. If the voltage is within the specified range but does not fluctuate or does so slowly, the sensor should be replaced.