O2 Sensor Test - Matco Tools FixAdvisor MD70 Operating Instruction

In addition to retrieving Diagnostic Trouble Code (DTC) and viewing
Live Data, you can use the FixAdvisor to perform additional diagnostic
tests, and to view diagnostic and vehicle information stored in your
vehicle's on-board computer.
Additional tests are accessed through the "Special Test Menu."
To access the Special Test Menu:
1. Press the M button.
The Main Menu displays.
2. Use the UP
as necessary, to highlight Special Test,
then press the ENTER
The Special Test Menu displays.
The following functions are available from the
Special Test Menu.
O2 Sensor Test – Retrieves and displays
O2 sensor monitor test results from your
vehicle's on-board computer.
Non-Continuous Test - Retrieves and
displays test results for emission-related
powertrain components and systems that
are not continuously monitored.
EVAP Leak Test - Performs a leak test for the vehicle's EVAP system.

O2 SENSOR TEST

OBD2 regulations require that applicable vehicles monitor and test
operation of the oxygen (O2) sensors to identify problems that can affect
fuel efficiency and vehicle emissions. These tests are performed
automatically when engine operating conditions are within predefined
limits. Results of these tests are stored in the on-board computer's
memory.
The O2 Sensor Test function lets you retrieve and view O2 sensor
monitor test results for the most recently completed tests from your
vehicle's on-board computer.
Vehicles are equipped with multiple O2 sensors. O2 sensors are
installed both upstream of (before) and downstream of (after) the
exhaust system Catalytic Converters. The name of an O2 sensor
identifies its location in the exhaust system. The name of each O2
sensor is made up of three parts:
O2S – this is the basic designation for all O2 sensors.
X or XX - These characters identify the location of the O2 sensor in
relation to a cylinder bank. An O2 sensor for cylinder bank 1 is
identified by the designation "1" of "B1"; a sensor for cylinder bank 2
is identified as "2" or "B2."
MD70
and DOWN buttons,
button.
O2S XX YY –or- O2S X Y
Additional Tests
O2 SENSOR TEST
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