NOx adsorber
This is a type of exhaust gas after-treatment system used on diesel vehicles that must be
visually inspected.
Periodic Trap Oxidizer (PTOX)
This is a type of exhaust gas after-treatment system used on diesel vehicles that must be
visually inspected.
Diesel Particulate Filter (DPF)
This is a type of exhaust gas after-treatment system used on diesel vehicles that must be
visually inspected.
Selective Catalytic Reduction (SCR)
, This is a type of exhaust gas after-treatment system used on diesel vehicles that must be
visually inspected.
Must be in the original configuration with the same number of devices in place, unless changes
are CARB approved/exempted
What are the conditions required for catalysts, filters, and traps to pass visual inspection?
Add-On Aftermarket Parts
This vehicle component must be visually inspected as part of the Other Emission Related
Components/Systems category.
Cylinder Heads
This vehicle component must be visually inspected as part of the Other Emission Related
Components/Systems category.
Exhaust Manifolds
This vehicle component must be visually inspected as part of the Other Emission Related
Components/Systems category.
Intake Manifolds
This vehicle component must be visually inspected as part of the Other Emission Related
Components/Systems category.
Superchargers
This vehicle component must be visually inspected as part of the Other Emission Related
Components/Systems category.
Turbochargers
This vehicle component must be visually inspected as part of the Other Emission Related
Components/Systems category.
This is a type of exhaust gas after-treatment system used on diesel vehicles that must be
visually inspected.
Periodic Trap Oxidizer (PTOX)
This is a type of exhaust gas after-treatment system used on diesel vehicles that must be
visually inspected.
Diesel Particulate Filter (DPF)
This is a type of exhaust gas after-treatment system used on diesel vehicles that must be
visually inspected.
Selective Catalytic Reduction (SCR)
, This is a type of exhaust gas after-treatment system used on diesel vehicles that must be
visually inspected.
Must be in the original configuration with the same number of devices in place, unless changes
are CARB approved/exempted
What are the conditions required for catalysts, filters, and traps to pass visual inspection?
Add-On Aftermarket Parts
This vehicle component must be visually inspected as part of the Other Emission Related
Components/Systems category.
Cylinder Heads
This vehicle component must be visually inspected as part of the Other Emission Related
Components/Systems category.
Exhaust Manifolds
This vehicle component must be visually inspected as part of the Other Emission Related
Components/Systems category.
Intake Manifolds
This vehicle component must be visually inspected as part of the Other Emission Related
Components/Systems category.
Superchargers
This vehicle component must be visually inspected as part of the Other Emission Related
Components/Systems category.
Turbochargers
This vehicle component must be visually inspected as part of the Other Emission Related
Components/Systems category.
