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I replace the o2 sensor on my 2002 toyota sinna and the code still their

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You could go to Advance or Auto zone to have the codes cleared.

Posted on Sep 04, 2010


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I got a po136 code when i change the exhaust box can it be the o2 sensor or the exhaust

This code indicates the downstream o2 sensor has failed. Make sure there are no exhaust leaks near the sensor causing false readings. If the connector/wiring is ok replace the sensor

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no engine stated, so cant help at all.
next time learn what engine you have an post that.

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Driving the car will not clear this trouble code, it has been stored in the ECU. You must remove the EFI fuse from the engine bay relay block for at least 60 sec, or disconnect the battery for that time.

Jul 12, 2012 | 2001 Toyota Corolla

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Is a bad o2 sensor under the same code as the catalytic converter or would there be a separate code for the o2 sensor ?

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1 Answer

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An air/fuel sensor is like an o2 sensor. It is in the exhaust system and looks just like an o2 sensor. You have 2 on the vehicle. We need the check engine light code to tell which one it is. Also recommend only Toyota's air/fuel sensor.

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