OBD II Exam 2025 Questions and
Answers
What kind of Driver's License is necessary to be licensed as an inspector? -
ANSWER✔✔-Any license that is valid in North Carolina
Do Emissions Analyzers need to be approved by the Division of Air Quality before
being approved for use? - ANSWER✔✔-Yes
Do Emissions related malfunctions always cause an outward indication of a problem? -
ANSWER✔✔-No
What are the 3 points of the EPA's strategy to reduce air pollution from transportation
sources? - ANSWER✔✔-Cleaner vehicles, Cleaner fuels, Properly maintained vehicles
What are the 3 goals of the Inspection and Maintenance program? - ANSWER✔✔-
Identify poorly maintained vehicles, insure that vehicles are properly repaired, identify
vehicles that have been tampered with
Which of the EPA's 3 points does NC's I/M program fall under? - ANSWER✔✔-
Properly maintained
, What is the purpose of the OBD II systems? - ANSWER✔✔-To monitor emission related
components for malfunction or deterioration
What is the purpose of the MIL? - ANSWER✔✔-To alert the driver when there is a
malfunction or deterioration of an emissions component
At what level does the MIL come on? - ANSWER✔✔-When the vehicle's emissions rise
above 1.5 times the EPA guidelines
If the unleaded gas restrictor has been tampered with, what component must the owner
replace to get the vehicle to pass inspection? - ANSWER✔✔-Gas restrictor and the
catalytic converter
If there is a discrepancy between the Emisison label on the vehicle and the Emission
control manual or software, which takes precedence? - ANSWER✔✔-The emission label
Is it OK to tell a customer that they shouldn't do an inspection if the MIL is on? -
ANSWER✔✔-No
If a vehicle has a light on that says "Service Engine Soon" accompanied by a wrench, is
that the same as the MIL? - ANSWER✔✔-No
If the vehicle fails due to DTC code, what page is the code listed on? - ANSWER✔✔-
Page 2. This must be given to customer
Are DTC's a substitute for diagnosis by a trained repair technician? - ANSWER✔✔-No
Answers
What kind of Driver's License is necessary to be licensed as an inspector? -
ANSWER✔✔-Any license that is valid in North Carolina
Do Emissions Analyzers need to be approved by the Division of Air Quality before
being approved for use? - ANSWER✔✔-Yes
Do Emissions related malfunctions always cause an outward indication of a problem? -
ANSWER✔✔-No
What are the 3 points of the EPA's strategy to reduce air pollution from transportation
sources? - ANSWER✔✔-Cleaner vehicles, Cleaner fuels, Properly maintained vehicles
What are the 3 goals of the Inspection and Maintenance program? - ANSWER✔✔-
Identify poorly maintained vehicles, insure that vehicles are properly repaired, identify
vehicles that have been tampered with
Which of the EPA's 3 points does NC's I/M program fall under? - ANSWER✔✔-
Properly maintained
, What is the purpose of the OBD II systems? - ANSWER✔✔-To monitor emission related
components for malfunction or deterioration
What is the purpose of the MIL? - ANSWER✔✔-To alert the driver when there is a
malfunction or deterioration of an emissions component
At what level does the MIL come on? - ANSWER✔✔-When the vehicle's emissions rise
above 1.5 times the EPA guidelines
If the unleaded gas restrictor has been tampered with, what component must the owner
replace to get the vehicle to pass inspection? - ANSWER✔✔-Gas restrictor and the
catalytic converter
If there is a discrepancy between the Emisison label on the vehicle and the Emission
control manual or software, which takes precedence? - ANSWER✔✔-The emission label
Is it OK to tell a customer that they shouldn't do an inspection if the MIL is on? -
ANSWER✔✔-No
If a vehicle has a light on that says "Service Engine Soon" accompanied by a wrench, is
that the same as the MIL? - ANSWER✔✔-No
If the vehicle fails due to DTC code, what page is the code listed on? - ANSWER✔✔-
Page 2. This must be given to customer
Are DTC's a substitute for diagnosis by a trained repair technician? - ANSWER✔✔-No
