When Can You Fail a Truck Emission Test?

All registered vehicles in Canada are subjected to an annual or biannual safety inspection to ensure safe operation on public roads, streets, and highways. Most cars and trucks are required to pass an emission test during these inspections. If the vehicle fails, it will not receive a valid inspection sticker.

In most cases, if the vehicle fails, the problem must be repaired, and the vehicle should be inspected again within 30 days. If you do not get the problem fixed, your vehicle may be banned from operation on public routes. Here are some of the common situations when your vehicle can fail an emission test:

• Improper fuel monitoring

Several components of the automobile work together to ensure the proper amount of gasoline is burned at all times. If there is any issue with the carburetor, fuel injection unit, or engine control unit, metering may be affected. It can cause more gas to burn than needed.

A vehicle using more gasoline than required will not pass the emission test. However, luckily, this problem can be fixed at a Truck Emission Test Station. You can make them check your vehicle to thoroughly inspect and fix the major issues in it.

• Faulty O₂ sensor

When the oxygen sensor in your truck or car becomes faulty, it will not be able to measure the levels of oxygen in the exhaust accurately. It can cause an increase in the toxicity of the fumes from your tailpipe, causing you to fail. In addition to increasing the toxicity of your exhaust gases, a faulty O₂ sensor can also reduce fuel efficiency and engine performance.

In some extreme cases, it may also cause the engine to overheat. If necessary, you can get it repaired or replaced from the nearby Truck Emission Test Centre.

• Exhaust leak

A leak in your vehicle's exhaust system can cause all sorts of issues, from increased engine noise and reduced fuel efficiency to dirtier gas fumes and pedal vibrations. So, you must note that even a minor exhaust leak can cause you to fail an emission inspection.

If you have an exhaust leak, it is recommended to call your nearby Truck Emission Test Station to get the problem fixed as soon as possible.

• Malfunctioning EVAP system

The EVAP or Evaporative Emission Control System in your vehicle is responsible for preventing the release of toxic fumes into the environment. If there is a defective purge valve, a leak in the vacuum hoses or vents, or even a loose or cracked gas cap, the EVAP system will not perform its primary function.

Repairing these problems at a Truck Emission Test Centre is generally inexpensive since affected components are easy to access.

Final thoughts

If your vehicle fails an emissions test, there's an excellent chance that one of these problems is to blame. It’s best to contact a Truck Emission Test Centre and get these issues fixed to ensure your automobile passes on the first attempt.