2016 Hyundai Genesis Coupe Has A Check Engine Light

Resolve Check Engine Light issues in 2016 Hyundai Genesis Coupe.

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Reviewed by
Andrew Hajjar
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 2016 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 2016 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 are the initial diagnostic steps to take for a check engine light on a 2016 Hyundai Genesis Coupe?

When the check engine light illuminates in your 2016 Hyundai Genesis Coupe, the first step is to assess the type of light. A steady light suggests a less urgent issue, while a blinking light indicates a serious problem that requires immediate attention. Begin your diagnostic process by checking the gas cap; a loose cap is a frequent culprit for triggering the light. Next, inspect your dashboard for any additional warning indicators that may provide clues about the underlying issue. If these basic checks do not resolve the concern, utilize an OBD-II scanner to retrieve fault codes from the vehicle's onboard computer. These codes will guide you in identifying specific problems, such as issues with the O2 sensor, ignition system, or emissions control. If you find the codes challenging to interpret or if the problem appears complex, consulting a certified mechanic is advisable for a thorough diagnosis. Remember, if the light is steady, you can drive cautiously to a mechanic, but it’s best to schedule an appointment promptly to prevent further damage to your vehicle. By following these initial diagnostic steps, you can effectively address the check engine light issue and ensure your Hyundai Genesis Coupe remains in optimal condition.

What are the common problems that could cause the check engine light to illuminate in a 2016 Hyundai Genesis Coupe?

When the check engine light illuminates in your 2016 Hyundai Genesis Coupe, it can be a source of concern, but understanding the common problems that may trigger this warning can help you address the issue effectively. One frequent culprit is a loose or faulty gas cap, which can lead to fuel vapor leaks and reduced fuel pressure. Another significant issue could be a failing catalytic converter, which not only affects emissions but can also diminish your vehicle's performance and fuel efficiency. Additionally, fouled spark plugs or spark plug wires can cause engine misfires, prompting the check engine light to activate. A malfunctioning oxygen sensor may also be at fault, as it can disrupt the engine's air-fuel mixture, leading to irregular running conditions. Other potential causes include cylinder misfires, often indicated by a flashing check engine light, air leaks in the intake system, and various ignition system problems. Emission system issues, such as a faulty EGR valve or mass airflow sensor, can also trigger the light, as can problems with the engine timing system. To accurately diagnose the issue, utilizing an OBD-II scanner is recommended, as it will provide specific fault codes that can guide you in pinpointing the exact problem. By being aware of these common issues, you can take proactive steps to troubleshoot and resolve the check engine light concerns in your Hyundai Genesis Coupe.

How urgent is it to address the check engine light in a 2016 Hyundai Genesis Coupe?

When dealing with a check engine light in your 2016 Hyundai Genesis Coupe, understanding the urgency of the situation is crucial for both safety and vehicle longevity. A blinking check engine light signals a severe issue, such as an engine misfire, which can lead to unburned fuel entering the exhaust system and potentially damaging the catalytic converter. In this case, it is imperative to stop driving immediately and seek professional help to prevent costly repairs. Conversely, a steady check engine light indicates a less urgent problem, but it still warrants attention. While you may continue driving for a short period, neglecting this warning can lead to long-term damage to critical components like the oxygen sensor or catalytic converter. Start by checking simple fixes, such as ensuring the gas cap is secure, and if the light persists, consider using an OBD-II scanner to diagnose the issue. Regardless of the light's behavior, addressing these symptoms promptly is essential to avoid safety risks and significant repair costs down the line.

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