How many wires on a after cat O2 sensor subaru legacy?

1. How many wires does a O2 sensor have?
2. Do all O2 sensors have 2 wires?
3. What O2 sensor is after the catalytic converter?
4. What are the 2 white wires on a O2 sensor?
5. Are all 4 wire oxygen sensors the same?
6. Can I use any 4 wire O2 sensor?
7. What is a 4 wire O2 sensor?
8. How do you reset the check engine light after changing O2 sensor?
9. Are Bank 1 and Bank 2 O2 sensors the same?
10. What color is the signal wire on an O2 sensor?

How many wires does a O2 sensor have?

4 Wire configuration

One wire is used for the signal, one for ground. The two other wires are used for heater so that the O2 sensor can be heated electronically.

Do all O2 sensors have 2 wires?

Heated O2 sensors typically have two-three or four wires (the extra wires are for the heater circuit). Note: Replacement O2 sensors must have the same number of wires as the original, and have the same internal resistance.

What O2 sensor is after the catalytic converter?

Back O2 sensors are located after the catalytic converter, a part that facilitates the conversion of pollutants in the exhaust to harmless by-products. These sensors monitor the efficiency of the converter. The computer compares the exhaust that flows into the converter with the exhaust that comes out.

What are the 2 white wires on a O2 sensor?

The black wire is the signal wire and connects to the black wire that goes to the thick green wire in the engine compartment. The two white wires are for the heater circuit and is not polarity conscious.

Are all 4 wire oxygen sensors the same?

Only found wattage difference in the heaters. There are 2 types of narrowband O2 sensors, titania and zirconia. Most cars use zirconia sensors and they're all interchangeable as long as they have the same number of wires, even then you could get away with using a 3 wire sensor in place of a 4 wire if you really had to.

Can I use any 4 wire O2 sensor?

Nope, you can't. The 5 wire is a wideband sensor, the 4-wire is a narrowband. They communicate with the ECU completely different.

What is a 4 wire O2 sensor?

The four-wire universal oxygen sensor is one of the sensors that monitors fuel consumption. This sensor measures the amount of unburned oxygen that is present in the oxygen as it exits the vehicle, which is indicative of the fuel mixture.

How do you reset the check engine light after changing O2 sensor?

Turn the ignition to the "On" position but don't crank the engine (it won't start anyway). Wait five minutes and reinsert the fuse. The "Check Engine" light will blink, then shut off.

Are Bank 1 and Bank 2 O2 sensors the same?

Bank 2 Sensor 1 is the first sensor closest to the engine. On Bank 2 means it is at the engine side with cylinders 2, 4, 6, 8, etc. Bank 2 Sensor 2 is the second sensor on the engine's exhaust pipe, usually behind the catalytic converter.

What color is the signal wire on an O2 sensor?

Color code for the Generic sensor is 2 white for the O2 Heaters, Black for the Signal line and Grey for the ground.