Bank 1 Bank 2 Oxygen O2 Sensor Location I Show You H Step 3 install new sensor. apply anti seize to the threading on the sensor, taking special care not to get any on the actual sensor itself. hand tighten the sensor in place and then tighten it fully using the wrench or tool. plug the electrical connection into the wire harness you unplugged the old one from. How to remove and replace an oxygen sensor when given the code p0139. also included a guide on how to locate bank1 bank2 sensor1 sensor2 on four, six and eig.
How To Remove And Replace An O2 Sensor Bank 1 Sensor 1 You Bank 1 is on the side with cylinder 1. bank 2 is the side with cylinder 2. most commonly, bank 1 is towards the front of the car if it has a transverse engine. the easiest way to discover the right cylinder bank is to check your car’s repair manual. you can also try to find any stamps on the cylinder block or head for any cylinder numbers. Step 3 – install new o2 sensor. compare your old o2 sensor with your new o2 sensor. they should be identical with the same length wire and electrical connector. before you thread it into the exhaust, it's a good idea to apply some anti seize grease to the threads on the sensor. this will make it easier to remove later on. Step 1 locate the oxygen sensor. 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. Step 2 – disconnect o2 sensor from exhaust. identify the faulty o2 sensor from the code. bank 1 is on the driver's side, while bank 2 is on the passenger's side. sensor 1 comes before the catalytic converter, while sensor 2 comes after. once you've identified the correct sensor, you can get to work.
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