Smog Inspector Level 1 Exam Questions
and Answers (Latest Update 2025)
What model year "Gasoline Vehicles" are subject to
California's Smog Check Program?
a. 1975 thru current model year
b. 1776 thru current model year
c. 1976 thru current model year
d. 1976 thru 1999 model year - Correct Answers ✅1976
through current model year
What model year "Diesel Vehicles" are subject to California's
Smog Check Program?
a. 2000 thru current model year
b. 1996 thru current model year
c. 1998 thru 2016 model year
d. 1998 thru current model year - Correct Answers ✅1998
through current model year
A 2005 Toyota Prius Hybrid is in for a Smog Inspection
because of a Change of Ownership, how should the Smog
Inspector proceed?
a. Conduct an ASM Test
b. Tell the new owner the vehicle does require a smog
inspection
c. Tell the new owner to make an appointment with the
referee
,Smog Inspector Level 1 Exam Questions
and Answers (Latest Update 2025)
d. Conduct an OIS Test - Correct Answers ✅Conduct an
OIS Test
When conducting a Two Speed Idle Test on a 1989 Ford
Mustang, how should the Smog Inspector Functionally test
the EGR System?
a. Manually lift the EGR Pintle and listen for an RPM drop
b. Apply vacuum to the EGR and listen for an RPM drop
c. Follow the manufacturers testing procedures
d. Use a Bi-directional scan tool and listen for an RPM drop -
Correct Answers ✅Follow the manufacturer's testing
procedure's
What emission(s) does the PCV system reduce?
a. H/C & CO2
b. H/C & CO
c. H/C & NOx
d. CO2 & CO - Correct Answers ✅HC and CO
What emission(s) does an Oxidation Catalyst (OC) reduce?
a. CO & CO2
b. H/C & CO
c. Hydrogen
d. NOx - Correct Answers ✅HC and CO
, Smog Inspector Level 1 Exam Questions
and Answers (Latest Update 2025)
A Diesel Vehicle is in for a smog inspection, but fuel is seen
leaking onto the ground. If the smog check inspector feels the
vehicle is safe for testing, how should he or she proceed?
a. Test the vehicle and Fail the Vehicle for the Liquid Fuel Leak
b. Test the vehicle and Pass the Vehicle regardless of the leak
c. Ignore the leak and Test the Vehicle in accordance with OIS
d. Ignore the leak and Test the Vehicle in accordance with EIS
- Correct Answers ✅Ignore the leak and test the vehicle in
accordance with OIS
What emissions class of vehicles have an extended warranty
on emissions components of 15 years and/or 150,000 miles?
a. PKEV
b. PLEV
c. PSEV
d. PZEV - Correct Answers ✅PZEV
What emission(s) does an air system (pump or pulse) reduce?
A. CO2 & H/C
b. CO & H/C
c. H/C & NOx
d. CO2 & NOx - Correct Answers ✅CO and HC
and Answers (Latest Update 2025)
What model year "Gasoline Vehicles" are subject to
California's Smog Check Program?
a. 1975 thru current model year
b. 1776 thru current model year
c. 1976 thru current model year
d. 1976 thru 1999 model year - Correct Answers ✅1976
through current model year
What model year "Diesel Vehicles" are subject to California's
Smog Check Program?
a. 2000 thru current model year
b. 1996 thru current model year
c. 1998 thru 2016 model year
d. 1998 thru current model year - Correct Answers ✅1998
through current model year
A 2005 Toyota Prius Hybrid is in for a Smog Inspection
because of a Change of Ownership, how should the Smog
Inspector proceed?
a. Conduct an ASM Test
b. Tell the new owner the vehicle does require a smog
inspection
c. Tell the new owner to make an appointment with the
referee
,Smog Inspector Level 1 Exam Questions
and Answers (Latest Update 2025)
d. Conduct an OIS Test - Correct Answers ✅Conduct an
OIS Test
When conducting a Two Speed Idle Test on a 1989 Ford
Mustang, how should the Smog Inspector Functionally test
the EGR System?
a. Manually lift the EGR Pintle and listen for an RPM drop
b. Apply vacuum to the EGR and listen for an RPM drop
c. Follow the manufacturers testing procedures
d. Use a Bi-directional scan tool and listen for an RPM drop -
Correct Answers ✅Follow the manufacturer's testing
procedure's
What emission(s) does the PCV system reduce?
a. H/C & CO2
b. H/C & CO
c. H/C & NOx
d. CO2 & CO - Correct Answers ✅HC and CO
What emission(s) does an Oxidation Catalyst (OC) reduce?
a. CO & CO2
b. H/C & CO
c. Hydrogen
d. NOx - Correct Answers ✅HC and CO
, Smog Inspector Level 1 Exam Questions
and Answers (Latest Update 2025)
A Diesel Vehicle is in for a smog inspection, but fuel is seen
leaking onto the ground. If the smog check inspector feels the
vehicle is safe for testing, how should he or she proceed?
a. Test the vehicle and Fail the Vehicle for the Liquid Fuel Leak
b. Test the vehicle and Pass the Vehicle regardless of the leak
c. Ignore the leak and Test the Vehicle in accordance with OIS
d. Ignore the leak and Test the Vehicle in accordance with EIS
- Correct Answers ✅Ignore the leak and test the vehicle in
accordance with OIS
What emissions class of vehicles have an extended warranty
on emissions components of 15 years and/or 150,000 miles?
a. PKEV
b. PLEV
c. PSEV
d. PZEV - Correct Answers ✅PZEV
What emission(s) does an air system (pump or pulse) reduce?
A. CO2 & H/C
b. CO & H/C
c. H/C & NOx
d. CO2 & NOx - Correct Answers ✅CO and HC
