Autel MaxiDiag Elite MD701 - Manual (Page 53)

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7) Press the ESC button to return to Diagnostic Menu.
6.6 O2 Monitor Test
OBD2 regulations set by SAE require that relevant vehicles
monitor and tests on 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 Monitor 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 Monitor Test function is not supported by vehicles which
communicate using a controller area network (CAN). For O2
Monitor Test results of CAN-equipped vehicles, see chapter
“On-Board Mon. Test”.
1) Use the UP/DOWN scroll button to select O2 Monitor Test
from Diagnostic Menu and press OK button. (Figure 6.3)
2) Wait a few seconds while the scan tool validates the PID MAP.
3) Use the UP/DOWN scroll button to select O2 sensor from O2
Monitor Test menu and press OK button. (Figure 6.24)
Figure 6.24

If the vehicle does not support the mode, an advisory message
will be displayed on the screen. (Figure 6.25)
.......... .. O2 Monitor Test …
1.O2 Bank1 Sensor1
2.O2 Bank1 Sensor2
3.O2 Bank2 Sensor1
4.O2 Bank2 Sensor2