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Forums > > Location of Downstream O2 Sensor 2001 Frontier
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Old 01-10-2017, 07:31 AM
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Default Location of Downstream O2 Sensor 2001 Frontier

I am really confused about the location of my downstream 02 Sensor on my 2001 Nissan Frontier XE King Cab 2.4 l KA24DE engine. I can only find two sensors. The upstream was obvious. However I am getting mixed information on the location of the downstream sensor. The only downstream sensor I can find on my model is right BEFORE the catalytic converter. There is no sensor beyond that. Most info I am getting reports the downstream sensor after the catalytic converter and that is not the case with my situation. Any information would be appreciated.

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RDT
Fort Mill, SC
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Old 01-10-2017, 10:44 PM
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There are two catalytic converters on a 2001 Frontier KA24DE. The upstream converter bolts right to the exhaust manifold. The downstream sensor is after the upstream converter, but probably before the rear converter.
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