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On a 1997 Porsche 911, there are typically two oxygen sensors: one located in the exhaust system before the catalytic converter (upstream sensor) and another positioned after the catalytic converter (downstream sensor). The upstream sensor is usually mounted on the exhaust manifold or exhaust pipe, while the downstream sensor is found further along the exhaust system, behind the catalytic converter. Accessing these sensors may require lifting the vehicle for better visibility and reach.

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AnswerBot

2mo ago

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