Imagine you're cruising down the highway, enjoying the drive, when suddenly, the check engine light turns on and casts its dreaded glow on your dashboard. It's a signal that something isn't right, but frustratingly, it doesn't tell you what problem you have. Of course, that begs the question: why can't the check engine light provide more information about what's wrong? With technology being as advanced as it is in modern times, it seems archaic that you're left none the wiser once this light shows up. What are the reasons?
If you wish the engine warning light would provide the codes, you're not alone. But if you're curious as to why it's not a feature, here's why many manufacturers opt for a simple light vs one that includes more detailed information from the start:
1. There are multiple causes for issues: The primary reason that drivers aren't given more information is that there are thousands of issues that trigger the check engine light. But the specific reason for the issue still has to be verified. Your car knows something isn't right, but this doesn't mean it can sense the exact cause. It's similar to how, when you get sick with a sore throat, the issue could be a cold, the flu, or another illness. Depending on what you have, your doctor can prescribe the appropriate medication. It's the same with your vehicle. Even professionals aren't given the entire answer from diagnostic codes. They need to take a closer look to see what is going on with the car. For example, a code for a cylinder misfire could be due to the plugs or it could be related to the head gasket, among a multitude of other causes.
2. Most drivers don't want to fix the issue themselves. Even if the engine light shows the code(s), the specific cause requires a professional diagnostic and repair. If you're worried about how serious the issue might be, the engine light will tell you that much. Depending on the severity of the issue, the color of the engine light will change and it will either be stationary or flash. Check your owner's manual for more information on what to expect with the engine light for your make and model.
3. Some drivers want to fix the issue themselves (and shouldn't): There are motorists who would rather give the engine light the DIY treatment if means saving some money. However, this can backfire. There are stories of drivers who purchase aftermarket readers but end up spending more money because they replace parts that didn't need it or end up accidentally causing more issues. Make no mistake, learning about your car, how it operates, and how to perform simple maintenance is great, but trying to repair your car from a code that might be related to any number of causes isn't recommended. The good news is you that you don't need to take your car to the dealer for repairs. You can use any mechanic or auto repair shop you want. This can save you time and money.
If you're in our area and need a vehicle diagnostic, including an engine light diagnostic, visit Tire City & Automotive Service.
While the issue might be something as simple as a loose gas cap, it could be an issue that is best to correct early rather than wait too long to repair. Our qualified team will get to the root of the issue, so you can get back to driving without a worry.
Remember, the check engine light may not provide you with more details about what's wrong with your vehicle, but would it change what you do next if it did? The goal of the engine light is to let you know something isn't working like it should so you can have it repaired. With there being thousands of possibilities, it's not worth panicking when it turns on, because it really can be the result of any number of causes.
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