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04 Mar 2014
 Oh no. The check engine light pops on again.
What’s the biggest headache when you drive back home after a long day work? No doubt there is nothing more frustrating than the check engine light is on. You cannot help asking yourself why. However, there is no explanation, just like the baby crying. It is very difficult to figure out what the check engine light is trying to tell you. However, before spending a lot in the shop for repairs, you need to have an understanding of the common reasons why the light is on. 

Reason No. 1: Faulty O2 sensor
The oxygen sensor takes care of measuring the amount of oxygen in the exhaust. When you push down on the accelerator, the sensor will send out a signal to the engine’s computer telling either add...