The following monitors are to be used for spark ignition engines
only:
1) EGR System
2) O2 Sensors
3) Catalyst
4) Evaporative System
5) O2 Sensor Heater
6) Secondary air
7) Heated Catalyst
The following monitors are to be used for compression ignition
engines only:
1) EGR System
2) NMHC Catalyst
3) NOx aftertreatment
4) Boost pressure system
5) Exhaust gas sensor
6) PM filter
2.5 EOBD Monitor Readiness Status
EOBD systems must indicate whether or not the vehicle‟s PCM‟s
monitor system has completed testing on each component.
Components that have been tested will be reported as “Ready”, or
“Complete”, meaning they have been tested by the EOBD system.
The purpose of recording readiness status is to allow inspectors to
determine if the vehicle‟s EOBD system has tested all the
components and/or systems.
The power-train control module (PCM) sets a monitor to “Ready” or
“Complete” after an appropriate drive cycle has been performed. The
drive cycle that enables a monitor and sets readiness codes to “Ready”
varies for each individual monitor. Once a monitor is set as “Ready”
or “Complete”, it will remain in this state. A number of factors,
including erasing of diagnostic trouble codes (DTCs) with a scan tool
or a disconnected battery, can result in Readiness Monitors being set
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