Check engine light is on why?- Faulty Oxygen sensor
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Check engine light is on why?
Check engine light can be triggered by a faulty oxygen sensor (O2 sensor)
This is one of the most common reasons
The O2 sensor is mounted in the exhaust manifold to monitor how much unburned oxygen is in the exhaust as the exhaust exits the engine. Monitoring oxygen levels in the exhaust is a way of gauging the fuel mixture. It tells the computer if the fuel mixture is burning rich (less oxygen) or lean (more oxygen)
- A faulty oxygen sensor may be the reason your car is consuming too much fuel as high as 40% increase.
- Your spark plugs won’t last long before they need replacement.
- They can cause damage to your catalyst converter which is pretty much more expensive to repair.
For best results, taking your car to a trusted mechanic for his evaluation my be in your best interest to get to the root of the problem before wearing yourself out trying to address the issue through a costly trial-and-error process – which could result in new problems if not properly handled by someone with proper knowledge and experience.