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Where can I find the oxygen sensor on a Lexus GX470?
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★ Top Answer
Underneath the Lexus GX470, you'll find the O2 sensor mounted on the exhaust pipe. There are a total of four sensors, two upstream and two downstream. If one of these sensors goes bad, you might see signs like decreased fuel efficiency, increased emissions, black smoke or a sulfur smell from the exhaust, or even a catalytic converter failure. Catching the issue early on can prevent converter problems. Typically, an O2 sensor will last between 3 to 5 years or around 30,000 to 50,000 miles before needing replacement. These sensors can get clogged up with carbon deposits from the exhaust, as well as grease and oil build-up. To prolong their life, make sure to use the correct fuel octane level and follow the service schedule in your owner's manual, particularly for spark plugs and air filters.
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The Lexus GX470 has oxygen sensors located in various places, either near the engine block's exhaust manifold or following the catalytic converter on the exhaust system.
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