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O2 sensor BANK 2 Sensor 1. Code: P0155

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Old 07-20-09, 09:25 PM   #1
kingof901s
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Default O2 sensor BANK 2 Sensor 1. Code: P0155

Hi I just got a check engine light came on today and take it to autozone to see what it comes on. I got a bad sensor from Bank 2 Sensor 1. Can you guys please help me by telling me where is that sensor located at so I can replace it?

THanks in ADVANCE!!
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Old 07-20-09, 10:52 PM   #2
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Search the 2GS forum for "Oxygen Location", I posted full pics to another thread. The thread is called "Pics Of Location Of Oxygen Sensors"
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Old 07-21-09, 08:16 AM   #3
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oh ok thanks alot!! so its the 1st O2 sensor locate on the 2nd cylinder right?
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Old 07-21-09, 01:54 PM   #4
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You are very welcome!

Where each sensor is at is dependent on what engine your car has. Refer to the pics. They make it much easier to visualize.
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Old 07-21-09, 08:08 PM   #5
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I have the same problem but my issue is Bank 1 sensor2 which is the O2 sensor in front of the CAT on the passenger side, Bank 2 is after the CAT(98% sure) I got a replacement sensor from Toyota auto dismantler for like $40. I hope that helps?
Do you have a gs300 or 400? i have a 2000 gs3
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Old 07-22-09, 11:05 AM   #6
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i got a 2002 gs300
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Old 07-23-09, 09:43 AM   #7
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No, the bank refers to the placement of the exhaust manifold on the head or in the engine configuration.

The sensor number refers to it's placement in the manifold. Sensor one is upstream of the catalytic converter or closer to the engine block. Sensor 2 is downstream of the cat, closer to the muffler....
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Old 07-23-09, 11:22 AM   #8
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Quote:
Originally Posted by kingof901s View Post
i got a 2002 gs300
That would be the second cat with the sensor on top. That is Bank 2 sensor 1. Open the hood. Look at the headers, it comes down you see these ball rounded things. And the furthest one is the second cat. Hope that helps.
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