Oxygen Sensor Monitoring: Description

The response rates of the upstream O2 sensors are monitored by measuring the period of the Lambda control oscillations. This period monitoring allows the detection of a slow O2 sensor. See Fig 1 and Fig 2 .

Fig 1: Oxygen Sensor Monitoring

Courtesy of LAND ROVER NORTH AMERICA, INC.

Fig 2: Oxygen Sensor Monitoring Structure

Courtesy of LAND ROVER NORTH AMERICA, INC.