Common Vehicle Problems That Lead to Emissions Test Failures
Imagine you’re at the testing center, confident your car will pass the drive clean test requires in Ontario . But then, the results come in—failure. Now, you’re stuck with repairs and a retest. You’re not alone. Many drivers fail their emissions test due to overlooked issues. The good news? Most of these problems can be fixed before the test. Understanding what causes failures can save you money, time, and frustration. Let’s break down the common reasons vehicles don’t pass the drive clean test and how you can avoid them in Ontario . 1. Faulty Oxygen Sensor Your car’s oxygen sensor monitors how much oxygen is in the exhaust. If it’s not working, your engine might burn more fuel than necessary. This leads to high emissions and poor fuel efficiency. A failing oxygen sensor can cause your car to: Burn too much fuel Release excessive pollutants Trigger the check engine light Solution: Get your oxygen sensor checked before your clean drive test in Ontar...