Can Bad Spark Plug Wires Cause Check Engine Light To Turn On?

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Sometimes your vehicle’s engine isn’t starting. Whenever you are going through this condition, you may want to know that is this happening due to my bad spark plug wires?

Besides, you may be also curious to know that- can bad spark plug wires cause the check engine light to turn on?

All right, we are here to tell you the details about it to meet your curiosity. So, to know more, keep reading the article.

Can bad spark plug wires cause the check engine light to turn on?

As we previously mentioned that bad spark plug wires are one of the possible reasons that can cause your engine to start failure. This is because, after a certain period, your spark plug wires start to develop some tiny cracks.

Therefore, the producing electricity escapes through these tiny cracks and finds its own way. That needs to transfer from the coil to the spark plug. So, instead of starting your vehicle’s engine, it begins to misfire. That causes ultimately engines to start failing while you are going to start it.

Read More: Best Spark Plug Wires For 6.0 Vortec

However, when your car’s engine starts to misfire due to malfunctioning of the bad spark plug wires, it triggers the check engine light turns on. So, if you see the flashing engine light, it indicates that some catastrophic misfiring has taken place in your vehicle’s engine.

Usually, there are so many reasons for this check engine light to be turned on. But, in most cases, it happens because of having bad spark plug wires. Yet, to know the possible reasons for this condition, you should find out the codes.

Read More: Best Spark Plug Wires for Big Block Chevy

This is because if your check engine light is on because of bad spark plug wires, they usually throw a code. And, once you read the code, you can be sure that it’s for bad spark plug wires.

Yet, if you don’t have your own code reader, go find some auto parts retailer (or click here to check it on Amazon). They will read the codes for free hopefully. And, if they don’t it will cost you very little. However, finding the codes is always the best practice to know why the light is turned on.

Read More: Best Spark Plug Wires For Chevy 350 With Headers

Preventive maintenance for the bad spark plug wires

In any way, if you find out that the check engine light has been turned on for these worn-out wires, you should replace these bad wires immediately. The spark plug wires are less expensive. And, you can easily replace the wires as replacing these wires are not very labor-intensive.

Besides, you should always inspect them to ensure that the wires are in good working condition. And, take this as a recommendation that you need to inspect the spark plug wires for every 30,000 miles.

Read More: Best Spark Plug Wire Removal Tools Review

After inspection, if you feel that they are in bad condition and need to be replaced, then replace them with a new one.

The reason is that if you don’t take this preventive maintenance of the bad spark plug wires, it may lead to serious problems. The problems include a damaged ignition coil, a clogged bad catalytic converter, malfunctioned oxygen sensor, etc.

Read More: How To Protect Spark Plug Wires From Headers And Melting

Besides, good spark plug wires are crucial key elements for your vehicle. They help to get you the best vehicle performance by maintaining its power as well as fuel economy.

So, whenever you see your check engine light turned on, take these above-mentioned preventive maintenance for your faulty spark plug wires.

Read More: Does Changing Spark Plug Wires Improve Performance?

Final verdict

Turning on the check engine light is an indicator that means there is something wrong with your vehicle’s engine. However, as you are curious to know- can bad spark plug wires cause the check engine light to turn on? So, in this article, we have given you details about this.

Hopefully, after reading the article, you will find your answer. Moreover, you will also find out what to do in this situation. So, hope for the best!