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New Generation N62 Engine Chapter 4 P.13

Course Contents/Background Material

- Oxygen sensor regulation

The N62 engines are fitted with a total of four oxygen sensors.

One planar broadband oxygen sensor (constant characteristic

curve), which regulates the fuel-air mixture, is located upstream

of each of the two primary catalytic converters.

There is a secondary catalytic converter sensor for each cylinder

bank positioned downstream of the main catalytic converter

(volatile characteristic curve) which monitors the catalytic

converter performance.

This monitoring means that if the exhaust gas concentration is

too high, the MIL (malfunction indicator lamp) lights up and a

fault code is stored.

Details of how the planar broadband oxygen sensor works can

be found in the description of the N42 engine.

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BMW N62 Series Specifications

General