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State Emissions Inspection

State Emissions Inspection

What is a State Emissions Inspection?

This mandatory emissions inspection was created to meet specific regional air-quality issues and improvement goals.

These inspections are part of the plan to protect the environment and improve air quality by inspecting every vehicle’s emissions system.

The state emissions inspection can be performed by any official Department of Transportation (DOT) service station.

State Emissions Inspection
State Emissions Inspection

Any such station will have a sign to let you know they are an official DOT service station.

During the emissions inspection, your vehicle goes through four different inspections.

VEHICLE EXHAUST GASES

First, your vehicle’s emissions are checked.

This includes idle testing, Acceleration Simulation Mode (ASM) testing, and evaporative system function tests. Second, the On-Board Diagnostics (OBD) system is checked.



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The OBD system is a device that detects problems in your engine.

The system was put in place to help control vehicle emissions.

Third, your gas cap will be inspected.

This just means that your gas cap is checked to make sure that no harmful gases are escaping from your gas tank into the atmosphere.

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Finally, your vehicle undergoes a visual inspection.

During the visual inspection, the following items are checked: catalytic converter, exhaust gas recirculation (EGR) valve, positive crankcase ventilation (PCV) valve,

Fuel inlet restrictor, muffler, air pump, tailpipe, and evaporative control system components.


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Catalytic Converter
Catalytic Converter

Exhaust Gas Recirculation (EGR)
Exhaust Gas Recirculation (EGR)

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Symptoms of an Exhaust Leak

If any of these items or inspections fail, the necessary part will need to be repaired or replaced, or your vehicle won’t pass the emissions test.

Why does your vehicle need a State Emissions Inspection?

Vehicles are a major source of pollution in and to help improve air quality, the law requires that your vehicle undergo an emissions inspection once a year.

If your vehicle isn’t inspected or doesn’t pass an inspection, it is illegal to drive the vehicle.

Again, it is a goal to protect the environment and improve air quality.

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When does your vehicle need a State Emissions Inspection?

Your vehicle is required to be inspected on or before your annual (once a year) inspection date.


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