Glendale Nissan Official Blog
Why is your check engine light on in your Nissan?
By Product Expert | Posted in FAQs, Service & Sales on Wednesday, February 22nd, 2017 at 7:47 pm
Meaning of check engine light in Nissan models
We’ve briefly touched on what your dashboard warning lights means, but there’s one light in particular that can cause the most frustration: the check engine light. That little yellow outline can be the bane of any driving experience, as you can’t tell immediately whether something is seriously wrong, or not so bad. Today we’re looking specifically at what the meaning is behind the check engine light in Nissan models and the most common things that trigger it.
Most common reasons for a check engine light
At the core of it, one of the many systems managed connected to your engine or exhaust is failing, and when the computer senses this, it triggers a light. Sometimes this can mean a gasket is going, and that can be a big deal, but then other times it might be a simple solution or a repair you can hold off on. Here are the top things that trigger a check engine light.
Loose Gas Cap
Really? Yes, really. If you are missing your gas cap, failed to screw it on tightly or if it’s damaged, your check engine light might turn on. The reason for this is that you don’t have the right pressure in your tank.
Faulty Catalytic Converter
Your catalytic converter is the part that is known to convert carbon monoxide into carbon dioxide, so it’s an important piece in the environmental puzzle. Without it, your vehicle may also not perform at its best and may even run a bit hotter, but you won’t likely be stranded on the side of the road.
Related: Why won’t your engine start in winter?
Failing O2 sensor
How bad is it when your 02 sensor fails? Well, it monitors the oxygen in your exhaust system, which mixes with fuel to give you that get-up-and-go. Without it working properly, your vehicle is likely to be less efficient, but your catalytic converter could also be damaged. Keeping up with maintenance is the very best way to keep things running smoothly and prevent more expensive repairs.
Spark plugs need to be replaced
You check engine light is triggered by a variety of parts that are all connected to the same basic system. If your spark plugs are bad, this could be the reason your light has turned on. Keep in mind that some of the other parts, like the O2 sensor and catalytic converter, are all connected so if one part is failing and you’re driving too long without a fix, you could be damaging other things.
Nissan at the 2018 Chicago Auto Show:
Not sure exactly what’s wrong with your Nissan? The best way to figure it out is to stop by our service center and get your model diagnosed.
