2017 Kia Cadenza Has A Check Engine Light

Troubleshooting the Check Engine Light in Your 2017 Kia Cadenza: Common Causes and Solutions

Find Repair Location
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 2017 Kia Cadenza 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 2017 Kia Cadenza 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 2017 Kia Cadenza?

When faced with a check engine light on your 2017 Kia Cadenza, it's essential to start with some straightforward diagnostic steps that can often resolve the issue without the need for professional assistance. Begin by checking the gas cap; a loose or damaged cap is a common culprit that can easily trigger the light. Next, take a moment to observe your dashboard gauges for any unusual readings, as these can provide clues about underlying problems. Utilizing an OBD-II scanner is a crucial step; it allows you to retrieve error codes from your vehicle's computer, giving you specific insights into what might be wrong. Additionally, inspect the condition of your spark plugs, as worn or faulty plugs can lead to engine performance issues. Finally, ensure that all essential fluid levels—such as oil, coolant, and transmission fluid—are adequate, as low levels can contribute to engine malfunctions. By systematically addressing these areas, you can effectively diagnose the cause of the check engine light and potentially resolve the issue on your own.

What are the common problems that could cause the check engine light to illuminate in a 2017 Kia Cadenza?

When the check engine light comes on in your 2017 Kia Cadenza, it can be a source of concern, but understanding the common problems that may cause this warning can empower you to take action. One of the simplest issues to check is the gas cap; a loose or damaged cap can easily trigger the light, so ensure it is tightened properly. If that’s not the issue, consider inspecting the oxygen sensor, as a faulty sensor can affect your vehicle's fuel efficiency and emissions. Additionally, problems with the catalytic converter can lead to significant performance issues, so keep an eye out for any unusual sounds or smells. The mass airflow sensor is another critical component that can malfunction, affecting the engine's air-fuel mixture. Worn-out spark plugs or a defective ignition coil can also cause misfires, which will illuminate the check engine light. If you notice any performance issues alongside the warning light, it’s crucial to address them promptly to avoid further damage. While some of these checks can be done at home, if the problem persists, consulting a qualified mechanic for a thorough diagnosis is always a wise choice.

How urgent is it to address the check engine light in a 2017 Kia Cadenza?

When the check engine light illuminates in your 2017 Kia Cadenza, it is crucial to understand the urgency of the situation. This warning indicator is not just a minor inconvenience; it signals potential issues with your vehicle's engine or emissions system that could escalate if left unaddressed. Ignoring this light can lead to more severe problems, including costly repairs or even a breakdown, which can compromise your safety on the road. For those inclined to take a DIY approach, the first step is to use an OBD-II scanner to retrieve diagnostic trouble codes, which can provide insight into the specific issue at hand. However, while some minor issues may be resolved at home, it is essential to recognize that many problems require professional expertise. Therefore, addressing the check engine light promptly not only helps in identifying and resolving underlying issues early but also ensures the optimal performance of your vehicle, ultimately saving you time and money in the long run.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.