2013 Hyundai Elantra Check Engine Light On

Resolve Check Engine Light Issues in Your 2013 Hyundai Elantra

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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 2013 Hyundai Elantra 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 Elantra 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 2013 Hyundai Elantra?

When faced with a check engine light on your 2013 Hyundai Elantra, the first step is to check the gas cap, as a loose or damaged cap is a common culprit. Ensure it is securely fastened, and if the light remains illuminated, proceed to observe its behavior; a steady light typically indicates a minor issue, while a flashing light signals a more serious problem that requires immediate attention. Next, utilize an OBD-II scanner to read the trouble codes from your vehicle's onboard computer, which can pinpoint specific issues like a faulty oxygen sensor or spark plugs. Pay close attention to any additional symptoms such as reduced fuel efficiency or rough idling, as these can provide further clues about the underlying problem. If you're uncertain about using the scanner or interpreting the codes, consulting your owner's manual or a professional mechanic can be beneficial. Finally, ensure that any identified issues are resolved before resetting the check engine light, as ignoring the root cause can lead to more significant problems in the future. By following this diagnostic approach, you can effectively troubleshoot and address the check engine light in your Hyundai Elantra.

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

When the check engine light illuminates in a 2013 Hyundai Elantra, it serves as a crucial alert for drivers to investigate potential issues that could affect vehicle performance and safety. One of the most straightforward checks is to ensure the gas cap is secure, as a loose or damaged cap can lead to fuel vapor leaks, negatively impacting fuel efficiency and emissions. If the gas cap is in good condition, attention should turn to the emissions system, particularly the catalytic converter, which can become clogged and significantly hinder engine performance. Additionally, faulty sensors, such as the oxygen or mass airflow sensors, can disrupt the engine's air-fuel mixture, leading to poor performance and increased emissions. Spark plugs and their associated wires are also vital components; if they are worn or fouled, they can cause engine misfires, which not only trigger the check engine light but can also lead to further damage if left unaddressed. More serious issues, such as a faulty head gasket or other engine-related problems, should be evaluated immediately to prevent extensive damage. Lastly, intermittent issues that arise under specific driving conditions may indicate a developing problem that warrants prompt attention. By methodically checking these common areas, DIY enthusiasts can often pinpoint and resolve the issues that cause the check engine light to activate, ensuring their vehicle remains in optimal condition.

How urgent is it to address the check engine light on a 2013 Hyundai Elantra?

When it comes to the check engine light on your 2013 Hyundai Elantra, understanding the urgency of the situation is crucial for both safety and vehicle longevity. A steady check engine light may suggest minor issues, such as a loose gas cap or a failing oxygen sensor, which, while not immediately dangerous, should still be addressed to avoid escalating problems. However, a flashing check engine light is a clear signal that something is seriously amiss, often indicating engine misfires that can lead to costly damage if left unchecked. Additionally, if you experience any performance issues alongside the light, such as reduced power or efficiency, it’s imperative to act quickly, as these symptoms can indicate that your vehicle is entering a protective "limp-mode." Ignoring these warnings can result in significant repairs down the line, not to mention potential safety risks while driving. Therefore, whether the light is steady or flashing, it’s always best to have your vehicle diagnosed by a certified mechanic promptly to ensure your safety and the health of your car.

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