Pennsylvania Emissions Inspector Certification Exam
Preparation Guide 2026: Comprehensive Review frequently
tested questions Practice Questions and Verified Correct
Answers.
What decade do we start doing emission devices on cars? - Answer - 1960
When removing a gas cap with safety equipment do we use? - Answer - Safety goggles
What is the best lean indicator to determine air fuel ratio? - Answer - Oxygen
Where is the best location to find a gross vehicle weight? - Answer - Sticker on door.
What is the reason for the emissions program in Pennsylvania? - Answer - For clean air
What is the range of normal Knox (N0x) production? - Answer - 1700-2500 per million parts
What is the maximum fee a station can charge for a safety sticker of replacement? - Answer - $2
labor plus sticker charge
Can I drive a car too far in one year? - Answer - No
What certified individual can deliver a waiver? - Answer - Certified repair technician CRT
How many days does a new resident have to register their vehicle? - Answer - 20 days
From the time you register how many days do you have to take a test? - Answer - 10 days
How old do you have to be to get any emissions license? - Answer - 18
,What speeds are the vehicle tested for the two speed idol test? - Answer - 2500 and idle
What is a Northern Region Emission Inspector? - Answer - Essentially worthless, can only
preform Visual Anti-Tampering Check and Gas cap test to vehicles.
What is a Emission Inspector? - Answer - Good for the whole state. Can preform Visual Anti-
Tampering Check, Gas Cap, Two-Speed Idle Test, ASM5015 (Dynamometer), OBD I/M
Checks. Also can preform One-Speed Idle test, but is not necessary since that specific test is
obsolete.
What is a Emission Repair Technician? - Answer - Waiver, allows vehicles that have failed the
I/M tests to apply for a waiver after specific procedures are followed.
How old must you be to become a PA certified Emission Inspector? - Answer - 18 years old.
What makes a vehicle a subject vehicle? - Answer - The vehicle must be gasoline powered, 1975
and newer, the gross vehicle weight must be less than 9,000 pounds or less, and is registered to
an I/M area.
Where do you find the Gross vehicle weight (GVWR)? - Answer - The GVWR or true weight of
the car should be located on the vehicle. The inspector should NOT use the vehicles registration
card.
What vehicles are non subject vehicles? - Answer - Motorcycles and motorized pedal cycles.
Note*
There are definitely more non subject vehicles.
What two conditions allow a vehicle to be exempted from an Emission (I/M) test? - Answer -
New or current year models that have less than 5,000 miles on the odometer are exempt. As well
as an individual who has owned a car for 1 year and has driven it less than 5,000 miles in 12
months.
,Note* 12 months is different than 1 year.
How many attempts should be made to communicate with a vehicle experiencing no
communication issues? - Answer - 3 times
How should inspectors respond to environmental regulations regarding emissions testing? -
Answer - They should follow them closely
Are flip flops allowed to be worn during emissions testing? - Answer - No
Is a road test necessary for emissions inspection? - Answer - No, it is not required
What is the name of the device that communicates with the vehicle's onboard computer? -
Answer - Scanner
What role do electronic components play in emissions systems? - Answer - They aid in
monitoring and controlling emissions processes
What is the primary role of an emissions inspector in Pennsylvania? - Answer - To conduct
vehicle emissions inspections and ensure compliance with state regulations
What is the purpose of an emissions system visual inspection? - Answer - To ensure that all
components are present and in good condition per regulations
What is the result if a vehicle fails the emissions test? - Answer - The owner can take it for
repairs and retest it
How does vehicle maintenance impact emissions levels? - Answer - Regular maintenance leads
to better performance and lower emissions
, What two tests are required in the northern region of Pennsylvania? - Answer - Gas cap and
visual
What may indicate a failing fuel system during the inspection? - Answer - Leaking fuel
Can you find the vehicle maintenance schedule on the PA training portal? - Answer - No
What is a key responsibility of emissions inspectors regarding technology? - Answer - To stay
updated on advancements that affect emissions testing
Is it necessary to provide proof of vehicle ownership for more than a year during inspections? -
Answer - No, proof is not needed
What is the physical characteristic of carbon monoxide? - Answer - Colorless and Odorless
Are vehicle maintenance schedules available on the Drive Clean PA website? - Answer - No,
they are not available
Why is carbon monoxide monitored during emissions testing? - Answer - It is a byproduct of
incomplete combustion
Who is responsible for creating the maintenance schedule in a new car owner's manual? -
Answer - The manufacturer
What is the required activity to ensure you receive important updates regarding your inspection
certification status? - Answer - PA Training Portal
What is the maximum fee a station can charge for a replacement safety sticker? - Answer - $2
labor plus sticker charge
Preparation Guide 2026: Comprehensive Review frequently
tested questions Practice Questions and Verified Correct
Answers.
What decade do we start doing emission devices on cars? - Answer - 1960
When removing a gas cap with safety equipment do we use? - Answer - Safety goggles
What is the best lean indicator to determine air fuel ratio? - Answer - Oxygen
Where is the best location to find a gross vehicle weight? - Answer - Sticker on door.
What is the reason for the emissions program in Pennsylvania? - Answer - For clean air
What is the range of normal Knox (N0x) production? - Answer - 1700-2500 per million parts
What is the maximum fee a station can charge for a safety sticker of replacement? - Answer - $2
labor plus sticker charge
Can I drive a car too far in one year? - Answer - No
What certified individual can deliver a waiver? - Answer - Certified repair technician CRT
How many days does a new resident have to register their vehicle? - Answer - 20 days
From the time you register how many days do you have to take a test? - Answer - 10 days
How old do you have to be to get any emissions license? - Answer - 18
,What speeds are the vehicle tested for the two speed idol test? - Answer - 2500 and idle
What is a Northern Region Emission Inspector? - Answer - Essentially worthless, can only
preform Visual Anti-Tampering Check and Gas cap test to vehicles.
What is a Emission Inspector? - Answer - Good for the whole state. Can preform Visual Anti-
Tampering Check, Gas Cap, Two-Speed Idle Test, ASM5015 (Dynamometer), OBD I/M
Checks. Also can preform One-Speed Idle test, but is not necessary since that specific test is
obsolete.
What is a Emission Repair Technician? - Answer - Waiver, allows vehicles that have failed the
I/M tests to apply for a waiver after specific procedures are followed.
How old must you be to become a PA certified Emission Inspector? - Answer - 18 years old.
What makes a vehicle a subject vehicle? - Answer - The vehicle must be gasoline powered, 1975
and newer, the gross vehicle weight must be less than 9,000 pounds or less, and is registered to
an I/M area.
Where do you find the Gross vehicle weight (GVWR)? - Answer - The GVWR or true weight of
the car should be located on the vehicle. The inspector should NOT use the vehicles registration
card.
What vehicles are non subject vehicles? - Answer - Motorcycles and motorized pedal cycles.
Note*
There are definitely more non subject vehicles.
What two conditions allow a vehicle to be exempted from an Emission (I/M) test? - Answer -
New or current year models that have less than 5,000 miles on the odometer are exempt. As well
as an individual who has owned a car for 1 year and has driven it less than 5,000 miles in 12
months.
,Note* 12 months is different than 1 year.
How many attempts should be made to communicate with a vehicle experiencing no
communication issues? - Answer - 3 times
How should inspectors respond to environmental regulations regarding emissions testing? -
Answer - They should follow them closely
Are flip flops allowed to be worn during emissions testing? - Answer - No
Is a road test necessary for emissions inspection? - Answer - No, it is not required
What is the name of the device that communicates with the vehicle's onboard computer? -
Answer - Scanner
What role do electronic components play in emissions systems? - Answer - They aid in
monitoring and controlling emissions processes
What is the primary role of an emissions inspector in Pennsylvania? - Answer - To conduct
vehicle emissions inspections and ensure compliance with state regulations
What is the purpose of an emissions system visual inspection? - Answer - To ensure that all
components are present and in good condition per regulations
What is the result if a vehicle fails the emissions test? - Answer - The owner can take it for
repairs and retest it
How does vehicle maintenance impact emissions levels? - Answer - Regular maintenance leads
to better performance and lower emissions
, What two tests are required in the northern region of Pennsylvania? - Answer - Gas cap and
visual
What may indicate a failing fuel system during the inspection? - Answer - Leaking fuel
Can you find the vehicle maintenance schedule on the PA training portal? - Answer - No
What is a key responsibility of emissions inspectors regarding technology? - Answer - To stay
updated on advancements that affect emissions testing
Is it necessary to provide proof of vehicle ownership for more than a year during inspections? -
Answer - No, proof is not needed
What is the physical characteristic of carbon monoxide? - Answer - Colorless and Odorless
Are vehicle maintenance schedules available on the Drive Clean PA website? - Answer - No,
they are not available
Why is carbon monoxide monitored during emissions testing? - Answer - It is a byproduct of
incomplete combustion
Who is responsible for creating the maintenance schedule in a new car owner's manual? -
Answer - The manufacturer
What is the required activity to ensure you receive important updates regarding your inspection
certification status? - Answer - PA Training Portal
What is the maximum fee a station can charge for a replacement safety sticker? - Answer - $2
labor plus sticker charge
