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Home >> BMW >> 2001 >> M3 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> Engine Performance - Overview >> Engine Management Systems >> Siemens Engine Management System >> Scope Of Input Functions Bosch Oxygen Sensors >> Notes

Scope Of Input Functions Bosch Oxygen Sensors: Notes

The MS42.0 system uses Bosch LSH 25 oxygen sensors that function basically the same as previously used (in Bosch systems). The voltage range is between 0 - 800 mV.

Fig 1: Identifying Pre-0000Catalyst O2 Sensors
G03395966Courtesy of BMW OF NORTH AMERICA, INC.
Fig 2: Identifying Post-Catalyst O2 Sensor
G03395967Courtesy of BMW OF NORTH AMERICA, INC.

The location has changed, the pre-cat sensors are mounted on top of the exhaust manifolds. The catalysts are now integral with the exhaust manifolds.

Fig 3: Identifying Sensors Location
G03395968Courtesy of BMW OF NORTH AMERICA, INC.