2023 Kia Soul Has A Check Engine Light

Troubleshooting the Check Engine Light in Your 2023 Kia Soul: Common Causes and Solutions

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Reviewed by
Devin Cabugcal
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 2023 Kia Soul 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 2023 Kia Soul 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 2023 Kia Soul?

When faced with a check engine light on your 2023 Kia Soul, it's essential to adopt a systematic diagnostic approach. Start by checking for visible issues, such as ensuring that the gas cap is securely tightened and free from damage, as this is a common trigger for the light. Next, utilize an OBD-II scanner to connect to your vehicle's diagnostic port; this tool will help you retrieve specific error codes that can guide you toward the underlying problem. Additionally, inspect the fluid levels in your vehicle, including engine oil, coolant, and transmission fluid, as low levels can also cause the check engine light to activate. Don't overlook the battery; check for any corrosion on the terminals and assess its overall condition, since a weak battery can lead to warning lights. Finally, consider performing a complete drive cycle, as sometimes the light may illuminate due to a temporary issue that could resolve itself with normal driving. By following these initial steps, you can effectively narrow down the potential causes of the check engine light and determine whether further action is needed.

What are the common problems that could cause the check engine light to illuminate in a 2023 Kia Soul?

When the check engine light comes on in your 2023 Kia Soul, it can be a source of concern, but understanding the common problems can help you address the issue effectively. One of the simplest fixes is to check the gas cap; a loose or damaged cap can easily trigger the light, and ensuring it is tightened can sometimes resolve the problem. If the light persists, consider inspecting the oxygen sensor, as a faulty sensor can lead to poor fuel efficiency and increased emissions, necessitating prompt replacement. Additionally, issues with the catalytic converter can also cause the check engine light to illuminate, indicating a need for immediate attention to maintain your vehicle's emissions control. Worn or faulty spark plugs are another common culprit, and replacing them at regular intervals can prevent this issue from arising. Furthermore, a malfunctioning mass airflow sensor can impact engine performance, so checking this component is crucial for optimal function. Lastly, problems with the ignition coil can lead to misfiring, which will also trigger the check engine light, making it essential to address any ignition issues promptly. By being proactive and addressing these common problems, you can help ensure your Kia Soul runs smoothly and efficiently.

How urgent is it to address the check engine light in a 2023 Kia Soul?

When the check engine light illuminates in your 2023 Kia Soul, it is essential to recognize the urgency of the situation. This warning light is not merely a nuisance; it signals potential issues within the engine or emissions system that, if ignored, can escalate into more severe problems. For DIY enthusiasts, the first step should be to understand that neglecting this warning can lead to costly repairs down the line, as minor issues can develop into major engine failures. Additionally, continuing to drive with the check engine light on can compromise your vehicle's fuel efficiency and overall performance, resulting in increased emissions that are harmful to the environment. Therefore, it is advisable to conduct a preliminary diagnostic check using an OBD-II scanner, which can provide insights into the specific trouble codes triggering the light. However, if the issue appears complex or beyond your expertise, seeking professional assistance is crucial to ensure that the underlying problem is accurately diagnosed and resolved, ultimately safeguarding your vehicle's reliability and performance.

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