Lexus IS 300 — DIY Bosch Universal O2 Sensor Installation (CEL P0161)

8 мая 2015 | Author: | No comments yet »
LEXUS IS300

Lexus IS 300 — DIY Bosch O2 Sensor Installation (CEL

If your check engine (CEL) comes on with P0161, it means your 2 sensor 2 (B2S2) O2 sensor is The dealer will charge you of $300 parts and labor to it, but really it’s pretty to do it yourself in less than an for $70 or so. Here’s how I replaced mine a Bosch universal sensor:

Tools Needed

Bosch O2 Sensor — Part 15733. Comes with connectors and wire seals.

Stands — You’ll to jack the car up to get to the sensor. NEVER use jacks to support the car while under it!

O2 Sensor Socket — You can it from most auto stores. A 22 mm box end wrench would too since you’ll be cutting the

Anti-seize — The Bosch comes with some on the but have some handy in case

Wire Cutter/Stripper

— Other penetrants PB Blaster, Liquid Wrench etc too

Breaker Bar — Optional, have to use one to get mine off

OBD-II Reader/Scanner — Optional. or Kragen can pull the code for you if you ask

Figure out what the check light means

First thing you want to do your check engine comes on is pull the OBD-II (though if you’re here, you already know you got a P0161). You can get a for pretty cheap (about but if you don’t think you’ll any use for the tool in the future, just go to or Kragen and they’ll pull the for you. I actually had another (can’t remember what it was along with P0161 but it went away once I the sensor.

Remove the faulty O2


You can get to the IS 300 B2S2 O2 sensor pretty by jacking up the passenger side of the Remember to support it with stands. Here’s a pic of where the located:

Spray it down with WD-40 (or whatever penetrant you to use) and let it sit for a bit before you try to remove it. the penetrant’s done it’s job of the rust and whatnot, use the O2 sensor to remove the sensor. Here’s a pic of the

Next, cut the wires on the faulty as close as possible to the sensor (note: you can cut the wires before the sensor and remove it using a 22 mm box end if you don’t have a O2 sensor handy). Leave the harness cut wires dangling from the car for

Install the Bosch Universal O2

First thing you want to do is the instructions that came the Bosch sensor to get a general of what you’re going to be Here’s a pic of the sensor:

And a pic of the other that comes with the

The big black thing is the Connector the little black this is the Cap, the grey things are the Connectors, and the yellow things are the Seals (refer to the Bosch for details).

Next, cut the Bosch wiring so that the wiring is a as the sensor itself and strip 3/8 of insulation from the wires:

Stick the wires into the Connector Body:

And place a Seal over each

Next, strip about 3/8 of off the wires from the OE harness dangling from under the

Run the wires coming out of the car through the Connector Cap and place a Wire over each wire. you do this, hold the Bosch and Connector Body next to it and sure the wires will be correctly once you assemble Here’s how the wires should be

LEXUS IS300
LEXUS IS300
LEXUS IS300

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