How to replace Bank 1 O2 sensor on Lexus ES300?
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Where are the oxygen sensors on a Lexus RX300?
Welcome and thank you for using JustAnswer. Your Lexus has one oxygen sensor. It is located aft of the catalytic converter in the exhaust system under the front passenger seat area. Your Lexus also has two Air/Fuel Ratio Sensors. Bank 1, Sensor 1 is located in the exhaust manifold on the rear of the engine.
What happens when you reset the ECU on a Lexus?
The ECU stores diagnostic trouble codes when it senses a malfunction so a mechanic can fix it later. It’s also the ECU’s job to store your driving data to customize your ride. For around the first 1,000 miles of the ECU being reset, the car adjusts to the driver’s typical driving style.
When to reset the ECU after changing an O2 sensor?
Sometimes an O2 sensor fails, and you need to replace it. Once you’ve replaced your vehicle’s O2 sensor, you’ll need to reset the ECU so it can properly gather information from the new O2 sensor.
Where are the oxygen sensors on a Lexus?
The Lexus will have a bank 1 and a bank 2 O2 sensor: one is near the firewall and in front of the catalytic converter; the other is behind the converter closer to the rear. They should primarily be the same part, just different lengths of wiring. The bulb part is connected to the exhaust. Figure 1. Location of the oxygen sensors.
How to check and replace an oxygen sensor ( air )?
A P1155 or P1135 code indicates you have a bad sensor. This is common in Toyota and Lexus cars and trucks. Learn how to test the air fuel ratio sensor to see if it is bad, and then learn how to replace the bad sensor. Nice O2 Sensor Socket Kit: http://www.amazon.com/gp/product/B005…
How do you remove an oxygen sensor socket?
Spray the threads with lubricant to make removal easier. After the lubricant has had time to penetrate the sensor bulb threads, put the special socket over the threads and break it free. Once you have loosened the bulb, finish removal by hand. Figure 3. Special oxygen sensor socket.