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Where are the oxygen sensors on a BMW 740i?

Anonymous

∙ 17y ago

Updated: 10/21/2022

There are four sensors, under car. 740i/iL has dual exhaust, 2 sensors per side, one in front of each catalytic converter and one behind. Sensors rarely go bad. Catalytic converters are sensitive to today's pourly refined gasoline and can burn out prematurely.

Wiki User

∙ 17y ago

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