Oxygen Sensor Regulation - BMW N62 Series Service Training

New Generation N62 Engine

- 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.
© BMW AG, Service Training
Course Contents/Background Material
Chapter 4 P.13