Ontario Drive Clean

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Ontario Drive Clean

Ontario Drive Clean

Test types

Three types of tests are commonly used to test emissions.

Vehicle Type of test

Light-duty vehicles with a model year 1998 to present On Board Diagnostic System test (OBD Test) Light-duty vehicles with a model year 1988 to 1997 Certain heavy-duty gasoline vehicles Tailpipe test (two-speed idle test for gasoline vehicles and visual inspection for light-duty diesel vehicles) Heavy-duty diesel vehicles Opacity test

Pre-test check

Before performing the emissions test, the inspector will do a visual check at no cost.

If the inspector finds any of the following issues, it must be corrected before the emissions test can continue, as it could lead to injury and/or the test equipment may not work properly:

missing catalytic converter and/or gas cap defects in the fuel filler pipe problems with the on-board computer system that would prevent the vehicle from being tested visible smoke coming from the tailpipe any problems the inspector believes would prevent the vehicle from being tested safely You will receive a pre-test check rejection form, if the vehicle cannot be tested. You will need to return for the test, once any required repairs are made.

On-board diagnostic system test

Most cars, vans and SUVs in Ontario — made in 1998 or later — have an on-board computer that monitors the vehicle’s engine and emissions system, every time you drive.;

The Drive Clean test uses your vehicle’s on-board computer to identify emissions problems.

During the test, the information stored in your vehicle’s on-board computer is checked to determine if your vehicle’s emissions systems are working properly and are not releasing pollutants beyond your vehicle’s emissions standards.

Can I get an OBD test if my ‘check engine’ light is on?

Tailpipe test

Vehicles not equipped with an electronic on-board diagnostic system include gas-fuelled:

cars and vans (model years 1988–1997) SUVs or pickup trucks between 3,857–4,500 kg (model years 1988–2006) heavy-duty trucks and buses, with a gross vehicle weight rating over 4,500 kg These vehicles will have a tailpipe test done to measure emissions.

The tailpipe test — also known as a two-speed idle test — measures carbon monoxide and hydrocarbon emissions.

Heavy duty vehicles

Some heavy-duty trucks and buses made in 2007 or later also have an OBD system.

Drive Clean facilities test these vehicles by:

conducting an opacity test (for diesel vehicles) conducting a two-speed idle test (for gasoline vehicles) scanning your OBD computer

The OBD results are advisory only and don’t have an impact on whether your vehicle passes or fails its emissions test.

This information is used as a courtesy to help you identify any problems with your vehicle that may not be obvious.

Opacity tests

Opacity tests are used for heavy-duty diesel-fuelled vehicles.

These tests measure smoke density from a vehicle’s exhaust.

Any diesel-fuelled heavy-duty vehicle that achieves 20% opacity — or less — when tested may be exempt from emissions testing in eligible years.

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