Why Is My Jaguar’s Check Engine Light On?

If you have been driving your Jaguar with a Check Engine light on, you probably should make a call to your Jag mechanic as soon as possible. This is a warning something is not working properly with your engine. The newer you Jag, the more that can go wrong, as technology has made it easier to trigger the light for a long list of issues. While it can be as simple as you not tightening the gas gap at the gas station, it can become far more serious. So why is your Jaguar’s engine light on? Here are some common possibilities.

Where is the Check Engine Light?

Some drivers don’t even realize they have a check engine light and therefore might not even notice it is on. However, it appears on your dashboard within your RPM dial. Generally, it indicates your On-Board Diagnostic (OBD) system has detected an issue with your Evaporative Emission Control System (EVAP), engine, transmission, or a combination of these issues.

What are Possible Issues?

Because there are multiple systems under constant monitoring in your Jaguar, these lights can be caused by simple issues. For example, filling up your car with the engine running can cause the EVAP to think there is a leak. Even if you didn’t put the gas cap on tight enough, the same issue can arise. However, because there are far more serious issues, it makes sense to have it checked out as soon as possible. Possible issues requiring urgent attention might include:

  • The cylinders
  • The mass airflow sensor needs replacing
  • Wires connected to your spark plug
  • Catalytic converter
  • Oxygen sensor
  • Ignition coil
  • Thermostat
  • Supercharged engine

Keep in mind this is just a few examples, with literally thousands of potential issues that might be causing the light to appear. That’s why a diagnostic at your auto service shop is required to rule out any hazardous issues.

What to do when the Check Engine Light Comes On

It’s not uncommon to continue to drive with the check engine light on. Another common reaction is performing your own diagnostics and repairs. The problem with both these responses is that you could cause more harm than good. Unless you are a certified mechanic, seeking professional advice should always be your first and only reaction. If you fail to diagnose the right issue, or you choose to simply ignore the light, you are putting yourself, your passengers, and other drivers in danger.

And let’s not forget an improper diagnosis just means you are going to mess with the wrong parts and cause further damage. Since the light is on for a reason, an appointment with your certified auto service shop is really the only thing to do. If it turns out to be nothing, no harm no foul. However, if it is something serious, they have the expertise to identify issues and make the right repairs using state of the art equipment to keep your Jaguar running smoothly.


Can Doing My Own Diagnostic Really Be That Bad?

As mentioned, unless you are a certified mechanic, even running a diagnostic on your own can backfire. First, you’ll need to purchase an OBD Scanner. Second, you want to find one that doesn’t place any risk on you or your Jaguar. Last, you then have to run the diagnostic and understand the messages you receive. It really is best left to the professionals to provide the service.

What If My Car Seems Fine?

As mentioned, because it could be something as simple as a loose gas cap, your car might be running smoothly. However, even cars that drive perfectly can have underlying issues when the check engine light comes on. In fact, the longer you ignore the light, the more damage you might be causing. Often cars with issues create a domino effect. The first issue occurs which in turn affects other components of your car.

The next thing you know you have incurred hundreds or even thousands of dollars in damage. As well, not every problem will indicate issues while you drive. If your catalytic converter is faulty, for example, the check engine light is the only clue you’ll have there’s an issue. As well, because Jaguars are pristine machines, their warnings are designed to sense issues at early stages. This way owners can ensure they receive attention sooner than later. If you choose to ignore it, you’re putting a very expensive vehicle in jeopardy of costly damage. You should think of your Jaguar as an investment you want to protect at all costs.

Schedule your check engine appointment at one of our three locations today! Contact us online here.


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