MICROSCAN User Manual - Snap-on

On-Board Diagnostics (OBD) Diagnostic Service Definitions
The completion value tracks the number of times that all conditions necessary for a specific
monitor to detect a malfunction have been encountered. The condition value indicates the number
of times that the vehicle has been operated in the specified conditions.
OBD Monitoring Conditions—displays the number of times that the vehicle has been operated
in the specified OBD monitoring conditions.
Engine Starts—displays the count of the number of times that the engine has been started.
Catalyst Monitor Completion Bank X—displays the number of times that all conditions
necessary to detect a Catalyst System Bank 1 or 2 malfunction have been encountered.
Catalyst Monitor Conditions Bank X—displays the number of times that the vehicle has been
operated in the specified Catalyst monitoring conditions.
O2 Sensor Monitor Completion Bank X—displays the number of time that all conditions
necessary to detect an Oxygen Sensor Bank 1 or 2 malfunction have been encountered.
O2 Sensor Monitor Conditions Bank X—displays the number of times that the vehicle has been
operated in the specified Oxygen Sensor monitoring conditions.
EGR Monitor Completion—displays the number of time that all conditions necessary to detect
an EGR system malfunction have been encountered.
EGR Monitor Conditions—displays the number of times that the vehicle has been operated in
the specified EGR system monitoring conditions.
Secondary Air Monitor Completion—displays the number of time that all conditions necessary
to detect a Secondary Air system malfunction have been encountered.
Secondary Air Monitor Conditions—displays the number of times that the vehicle has been
operated in the specified Secondary Air system monitoring conditions.
EVAP Monitor Completion—displays the number of time that all conditions necessary to detect
an EVAP system leak malfunction have been encountered.
EVAP Monitor Conditions—displays the number of times that the vehicle has been operated in
the specified EVAP system leak malfunction monitoring conditions.
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