TOPIC : oxygen sensor

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Troubleshooting Exhaust Emissions

When a vehicle comes into your service bay with a drivability problem you immediately start to wonder if this is could an ignition problem, a fuel problem or some kind of electrical issue that’s happening that would make this vehicle act up enough for the customer to bring it into your shop.

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BMW Oxygen Sensor

This bulletin applies to BMW 5 Series vehicles equipped with the N20 engine. The Service Engine Soon (BMW’s MIL) may be on, with DTC 118602 stored (oxygen sensor before catalytic converter, fine mixture control, exhaust gas after converter too lean).

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