Operation Manual

4) Press EXIT setup up the Fuel Type and Engine Liter.
5) Press EXIT return the trip information View. If you want the Change Unit for
Trip information, you can ENTER Diagnostic Menu Set up the Unit of
Measure.
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4.7 O2 Sensor Test
OBD II regulations set by the SAE require that relevant vehicles monitor
and test the oxygen (O2) sensors to identify problems related to fuel
efficiency and vehicle emissions. These tests are not on-demand tests and
they are done automatically when engine operating conditions are within
specified limits. These test results are saved in the on-board computer's
memory.
The O2 Sensor Test function allows retrieval and viewing of O2 sensor
monitor test results for the most recently performed tests from the
vehicle's on-board computer.
The O2 Sensor Test function is not supported by vehicles which
communicate using a controller area network (CAN). For O2 Sensor Test
results of CAN-equipped vehicles, see chapter "On-Board Mon. Test".