Texas emissions inspections Actual Exam
Questions with Correct Verified Detailed
Answers A Grade latest update 2025
What two checks are required of the MIL:
i. Key-On Engine Off (KOEO)
ii. Key-On Engine Running (KOER)
iii. Key-Off Engine Off (KOEO)
iv. Key-Off Engine Off (KOEO) --- correct answer ---i and ii
What are you checking for during the Key On, Engine Off (KOEO)
inspection? --- correct answer ---That the MIL comes on when the
ignition key is turned to the KOEO position
True or False: On some vehicles, the MIL will illuminate very briefly
when the key is turned to the KOEO position, and then will go out.
This is not acceptable. --- correct answer ---False
What are you checking for during the Key On, Engine Running
inspection? --- correct answer ---If the MIL remains on with the
engine running, indicating that there is a problem with the vehicle
, What does the MIL look like visually? --- correct answer ---It will say
"Service Engine Soon"
It will say "Check engine"
The international engine symbol
What information will be downloaded from the OBDII system? ---
correct answer ---MIL status, readiness status, and diagnostic trouble
codes
True or False: MIL status refers to whether or not the PCM has
commanded the MIL to be on. --- correct answer ---True
What does it mean when a component that has been diagnosed is
termed "ready"? --- correct answer ---The component was tested by
the OBDII system
What does it mean when the non-continuous components or systems
are set to "not ready"? --- correct answer ---The battery has been
disconnected or the codes have been cleared
Questions with Correct Verified Detailed
Answers A Grade latest update 2025
What two checks are required of the MIL:
i. Key-On Engine Off (KOEO)
ii. Key-On Engine Running (KOER)
iii. Key-Off Engine Off (KOEO)
iv. Key-Off Engine Off (KOEO) --- correct answer ---i and ii
What are you checking for during the Key On, Engine Off (KOEO)
inspection? --- correct answer ---That the MIL comes on when the
ignition key is turned to the KOEO position
True or False: On some vehicles, the MIL will illuminate very briefly
when the key is turned to the KOEO position, and then will go out.
This is not acceptable. --- correct answer ---False
What are you checking for during the Key On, Engine Running
inspection? --- correct answer ---If the MIL remains on with the
engine running, indicating that there is a problem with the vehicle
, What does the MIL look like visually? --- correct answer ---It will say
"Service Engine Soon"
It will say "Check engine"
The international engine symbol
What information will be downloaded from the OBDII system? ---
correct answer ---MIL status, readiness status, and diagnostic trouble
codes
True or False: MIL status refers to whether or not the PCM has
commanded the MIL to be on. --- correct answer ---True
What does it mean when a component that has been diagnosed is
termed "ready"? --- correct answer ---The component was tested by
the OBDII system
What does it mean when the non-continuous components or systems
are set to "not ready"? --- correct answer ---The battery has been
disconnected or the codes have been cleared
