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P0155 code - O2 sensor

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Old Oct 8, 2012 | 04:30 PM
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deekay911's Avatar
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From: Charleston SC
Year: 2000
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Engine: 4.0L
Default P0155 code - O2 sensor

I got a P0155 code today on my 2000 XJ, and it says that's a O2 sensor. It says the code cannot be cleared. I guess I need to replace the O2 sensor - there's 2 I think on this jeep, so which one would it be?
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Old Oct 8, 2012 | 04:30 PM
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Upstream
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Old Oct 8, 2012 | 06:43 PM
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thanks - where is that one situated?
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Old Oct 8, 2012 | 07:25 PM
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It's the one in the downpipe right after the exhaust manifold, before the catalytic converter
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