Onboard diagnostics, Can obd2 29 – Equus 3110 - CanOBD2 Diagnostic Tool User Manual
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CAN OBD2
29
E
Onboard Diagnostics
OBD 2 MONITORS
OBD 2 Reference Table
The table below lists current OBD 2 Monitors, and indicates the fol-
lowing for each Monitor:
A. Monitor Type (how often does the Monitor run; Continuous or Once
per trip)
B. Number of trips needed, with a fault present, to set a pending DTC
C. Number of consecutive trips needed, with a fault present, to com-
mand the MIL “On” and store a DTC
D. Number of trips needed, with no faults present, to erase a Pending
DTC
E. Number and type of trips or drive cycles needed, with no faults
present, to turn off the MIL
F. Number of warm-up periods needed to erase the DTC from the
computer’s memory after the MIL is turned off
Name of
Monitor
A
B
C
D
E
F
Comprehensive
Continuous
1
2
1
3
40
Component Monitor
Misfire Monitor
Continuous
1
2
1
3 - similar
80
(Type 1 and 3)
conditions
Misfire Monitor
Continuous
1
3 - similar
80
(Type 2)
conditions
Fuel System
Continuous
1
1 or 2
1
3 - similar
80
Monitor
conditions
Catalytic Converter
Once per
1
2
1
3 trips
40
Monitor
trip
Oxygen Sensor
Once per
1
2
1
3 trips
40
Monitor
trip
Oxygen Sensor
Once per
1
2
1
3 trips
40
Heater Monitor
trip
Exhaust Gas
Once per
1
2
1
3 trips
40
Recirculation (EGR)
trip
Monitor
Evaporative
Once per
1
2
1
3 trips
40
Emissions Controls
trip
Monitor
Secondary Air
Once per
1
2
1
3 trips
40
System (AIR)
trip
Monitor