ES - 1st to 4th Gen (1990-2006) Forum for all 1990 - 2006 ES300 and ES330 models. ES250 topics go here as well.

bank 1, sensor 02 (code PO 136)

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Old 08-17-09, 07:19 PM
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lexie2000
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Exclamation bank 1, sensor 02 (code PO 136)

Hello,
does anyone know where bank 01 sensor 02 is located on a 2000 Lexus ES300.
The computer code that came up on a hand-held scanner is PO136; bank 01, sensor 02. It's one of the oxygen sensors, but I don't know if this one comes before or after the catalytic converter.

Other codes that came up on the scanner are: 440 (evaporative system problem) ; 441(Evap System purge flow low) and 446 (evaporative vent solenoid problem ).

One dealer told me that a bad O2 sensor could cause 440, 441 and 446 codes to appear, as might a bad gas tank cap.

Can anyone advise?

The other thing is, dealer is asking $330 for a sensor (part only) (I am in Toronto,Canada. They can be found for less online (Bosch universal), but a mechanic is telling me that he does not trust online auto parts and he would only warrant his work if he gets the original part (from a Lexus dealer).

Does anyone have experience with non-dealership parts? Than you.
Old 08-17-09, 08:35 PM
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tonysgs300
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Hey if its the same as a GS3 then its the bottom sensor BEFORE the Cat. (has the longer plug) Mine went out and i fixed it no problem. hope this helps. I libe in CA and i got my replacement from a toyota pick in pull for like $40 and installed it myself. its not hard just need a wrench. I cant remember what size
Old 08-18-09, 10:07 PM
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steviej
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Bank 1 in the set of three cylinder closest to the windshield.

Sensor 2 is the sensor after the catalytic converter. Jack the car up and support it with two jack stands. This one is easy to get to from underneath.

steviej
Old 08-18-09, 11:20 PM
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ASG14
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Do NOT use a Bosch sensor. They do not work well, at all, on Toyota/Lexus.

You can get the sensor from online discount OEM Toyota parts dealers. Make sure if you actually have an O2 sensor, OR an A/F sensor. They are not interchangable.

Also, if you call up the discount OEM parts dealer of your choice, and give them your VIN, they can tell you if it;s an O2 or AF sensor.
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