Texas Emissions Inspections Exam Newest 2025/2026
Complete All Questions And Correct Detailed Answers
(Verified Answers) |Already Graded A+||Brand New
Version!!
Why are we concerned about motor vehicle pollution? - ANSWER-Motor vehicles
emit toxic air pollutants
Motor vehicles contribute to the formation of ground level ozone
A "typical" vehicle emits a half-ton of air pollution annually
A malfunctioning vehicle emits many times the amount of pollution of a
"typical" vehicle
True or False: Motor vehicles are the largest source of ground-level ozone (or
smog) in Texas. - ANSWER-True
True or False: OBD equipped vehicles model year 2001 and newer may have
more than one OBD monitor set to Not Ready. - ANSWER-False
When does the powertrain control module (PCM-OBDII) set a monitor to
"ready"? - ANSWER-After an appropriate drive cycle has been performed
What is the function of a Diagnostic Trouble Code (DTC)? - ANSWER-To describe
the failure indicated by the OBDII system
Why must you test if the MIL illuminates during the KOEO part of the
inspection? - ANSWER-The OBDII system cannot alert drivers to problems if the
MIL does not work
, What does it mean if the MIL is illuminated during the KOER inspection? -
ANSWER-The vehicle's OBDII system has detected a problem with the vehicle
What reasons should you fail a vehicle on the OBDII inspection? - ANSWER-The
MIL does not illuminate at all when the ignition key is turned to the KOEO
position
The MIL is illuminated when the engine is running
The MIL status, as indicated by the scan tool, is ON
More than the allowable numbers of monitors are not "ready"
Which of the following is a reason the inspector can enter into the analyzer
as to WHY a vehicles' computer might fail to communicate with the analyzer?
- ANSWER-Connector is missing, damaged, or tampered
True or False: Vehicles over 8,500 GVWR must have a DLC. - ANSWER-False
True or False: If a vehicle over 8,500 GVWR is equipped with a DLC, you
should connect to the DLC. - ANSWER-True
What vehicles must have their gas cap checked to determine if it is missing
or defective? - ANSWER-Vehicles from 2-24 model years old
What vehicles are exempt from the gas cap test? - ANSWER-Slow moving
vehicles (that operate at less than 25 mph)
What is the primary purpose of OBDII? - ANSWER-To insure that vehicles emit
the minimum amount of pollutants through their useful life.
Complete All Questions And Correct Detailed Answers
(Verified Answers) |Already Graded A+||Brand New
Version!!
Why are we concerned about motor vehicle pollution? - ANSWER-Motor vehicles
emit toxic air pollutants
Motor vehicles contribute to the formation of ground level ozone
A "typical" vehicle emits a half-ton of air pollution annually
A malfunctioning vehicle emits many times the amount of pollution of a
"typical" vehicle
True or False: Motor vehicles are the largest source of ground-level ozone (or
smog) in Texas. - ANSWER-True
True or False: OBD equipped vehicles model year 2001 and newer may have
more than one OBD monitor set to Not Ready. - ANSWER-False
When does the powertrain control module (PCM-OBDII) set a monitor to
"ready"? - ANSWER-After an appropriate drive cycle has been performed
What is the function of a Diagnostic Trouble Code (DTC)? - ANSWER-To describe
the failure indicated by the OBDII system
Why must you test if the MIL illuminates during the KOEO part of the
inspection? - ANSWER-The OBDII system cannot alert drivers to problems if the
MIL does not work
, What does it mean if the MIL is illuminated during the KOER inspection? -
ANSWER-The vehicle's OBDII system has detected a problem with the vehicle
What reasons should you fail a vehicle on the OBDII inspection? - ANSWER-The
MIL does not illuminate at all when the ignition key is turned to the KOEO
position
The MIL is illuminated when the engine is running
The MIL status, as indicated by the scan tool, is ON
More than the allowable numbers of monitors are not "ready"
Which of the following is a reason the inspector can enter into the analyzer
as to WHY a vehicles' computer might fail to communicate with the analyzer?
- ANSWER-Connector is missing, damaged, or tampered
True or False: Vehicles over 8,500 GVWR must have a DLC. - ANSWER-False
True or False: If a vehicle over 8,500 GVWR is equipped with a DLC, you
should connect to the DLC. - ANSWER-True
What vehicles must have their gas cap checked to determine if it is missing
or defective? - ANSWER-Vehicles from 2-24 model years old
What vehicles are exempt from the gas cap test? - ANSWER-Slow moving
vehicles (that operate at less than 25 mph)
What is the primary purpose of OBDII? - ANSWER-To insure that vehicles emit
the minimum amount of pollutants through their useful life.
