2013 Hyundai Genesis Coupe Has A Check Engine Light

Common Causes of the Check Engine Light in Your 2013 Hyundai Genesis Coupe and How to Resolve Them

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
40% chance it's the
Emissions System
0%
60% chance it's
Something else
The most common reasons a 2013 Hyundai Genesis Coupe has a check engine light are an emissions system component, a sensor, or a catalytic converter.
  • Emissions System: A faulty emissions system component, such as an oxygen sensor or EGR valve, can lead to increased emissions and trigger the check engine light.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2013 Hyundai Genesis Coupe has a check engine light?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

A faulty oxygen sensor is one of the most common causes of a check engine light. Symptoms may include a decrease in fuel mileage, hesitation or misfiring from the engine, rough idling or even stalling. A faulty sensor may cause the vehicle to fail an emissions test.

Any time there is an emissions fault the check engine light will be displayed. The purpose of the check engine light is to inform the driver that an emission related fault has been found, and that there are on-board diagnostic (OBD) trouble codes stored in the powertrain or engine control module. Additionally, since the emissions systems are so intertwined into engine control and transmission control systems, symptoms may include nearly any sort of drivability concerns. This may include harsh shifting, failure to shift, hesitation on acceleration, jerking, engine failure to start or run, loss of power, or any number of other drivability issues.

Due to the nature of electrical systems on modern vehicles, the range of problems these can cause are nearly limitless. However, there is a way to categorize them in two ways. Permanent and intermittent problems. Permanent problems appear and remain. This may be the vehicle will not start, the radio does not work, or the door chime will not turn off among many, many others. These problems are more straight-forward to diagnose since they present themselves at all time. This means there will always be a fault to find. Intermittent electrical problems, however, can be difficult or impossible to locate, since they appear then disappear without warning. The best case scenario for an intermittent issue is when replicating the problem is easily accomplished and understood. This allows a technician to make an issue semi-permanent, allowing them to find the fault. Other issues that come and go without warning and cannot be replicated on demand must occur when the technician is servicing the vehicle, otherwise there is no problem to correct. It is most important to understand that electrical system faults always require inspection, and can include the vehicle working in any manner, or not working at all.

Like we noted in the last section, general diagnosis symptoms are the most vague of the bunch. There are several diagnostic spectrums, electrical diagnosis, drivability diagnostics, engine diagnostics, transmission diagnostics, and the list could continue for about 5 or 10 more spectrums of diagnostics. The most important take-away here, is that general diagnostics are diagnostics that have no other spectrum in which they fit, or the problem is unknown. This means that any vehicle left outside of a repair facility with the keys and an authorization to perform diagnosis will be diagnosed under the general diagnosis spectrum.

When the Check Engine Light comes on, you may experience engine performance issues such as poor acceleration, rough idling, or an engine that won't start. In some cases, no abnormal symptoms will be experienced. Other systems like the transmission or ABS can cause the Check Engine Light to illuminate and lights for those systems can come on at the same time. Similar lights may say "Check Engine Soon", "Malfunction Indicator Light" or just "Check". In rare case the engine can overheat.

What steps should I take to diagnose the check engine light on my 2013 Hyundai Genesis Coupe?

To effectively diagnose the check engine light on your 2013 Hyundai Genesis Coupe, start with the simplest solutions before delving into more complex diagnostics. Begin by using an OBD-II scanner to retrieve the diagnostic trouble codes (DTCs) from your vehicle's computer. This initial step is crucial as it provides specific insights into the underlying issues. Once you have the codes, interpret them to identify potential problems, such as a loose gas cap or a faulty oxygen sensor. Pay attention to the behavior of the check engine light; a steady light often indicates a minor issue, while a flashing light signals a more serious concern that requires immediate attention. Additionally, check for common causes like a failing catalytic converter or fouled spark plugs, which can often be resolved with basic maintenance. Always consult your owner's manual for model-specific guidance, and if the issue remains unclear or complex, consider visiting a certified service center for professional assistance. By following this structured approach, you can efficiently diagnose and address the check engine light issue, ensuring your vehicle remains in optimal condition.

What are the common problems that could cause the check engine light to illuminate in a 2013 Hyundai Genesis Coupe?

When the check engine light illuminates in your 2013 Hyundai Genesis Coupe, it can be a source of concern, but understanding the common problems can help you diagnose the issue effectively. One frequent culprit is a loose or faulty gas cap, which can lead to fuel vapor leaks and reduced fuel efficiency. Another significant issue could be a failing catalytic converter, especially in older vehicles, which can severely impact performance and fuel economy. Additionally, fouled spark plugs or spark plug wires can cause engine misfires, leading to poor performance and potentially preventing the engine from running. A faulty oxygen sensor is also a common problem, as it affects the air-fuel mixture, resulting in poor engine performance and increased emissions. Furthermore, a malfunctioning mass air flow sensor can disrupt the engine's fuel injection process, causing efficiency issues. Lastly, various emissions and engine system problems, such as issues with the EGR system or fuel injectors, can also trigger the check engine light. To accurately identify the specific issue, using an OBD-II scanner to read the diagnostic trouble codes is essential, allowing you to take informed steps toward resolving the problem.

How urgent is it to address the check engine light in a 2013 Hyundai Genesis Coupe?

When it comes to the check engine light in your 2013 Hyundai Genesis Coupe, understanding the urgency of the situation is crucial for both safety and vehicle longevity. A blinking check engine light is a clear signal that something is seriously wrong, often indicating engine misfires that can lead to costly damage, particularly to the catalytic converter. In such cases, it’s imperative to pull over safely and seek professional help immediately to prevent further complications. On the other hand, a solid check engine light, while less urgent, still warrants attention. It suggests that there is an issue that could escalate if left unaddressed. For DIY enthusiasts, start by checking simple fixes like a loose gas cap, which can sometimes resolve the warning. Utilizing an OBD-II scanner can also provide valuable insights into the specific fault codes, guiding you toward the necessary repairs. Remember, timely action can save you from more extensive damage and costly repairs down the line, making it essential to address any check engine light promptly.

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