2017 Mercedes-Benz AMG GT S Has A Check Engine Light

Check Engine Light Issues in 2017 Mercedes-Benz AMG GT S: Causes and Solutions

Find Repair Location
Reviewed by
Aisha
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 Mercedes-Benz AMG GT S 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 Mercedes-Benz AMG GT S 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 Mercedes-Benz AMG GT S?

When faced with a check engine light on your 2017 Mercedes-Benz AMG GT S, the first step is to conduct a thorough visual inspection. Start by checking the gas cap; ensure it is securely tightened and free from damage, as a faulty gas cap is a common trigger for the warning light. Next, utilize an OBD-II scanner to connect to your vehicle's diagnostic port. This tool will help you retrieve any error codes that can pinpoint the specific issue at hand. Additionally, pay attention to any accompanying symptoms such as unusual noises or performance changes, as these can provide further clues about the underlying problem. It’s also beneficial to consult your owner’s manual, which may offer insights into what the check engine light signifies and suggest troubleshooting steps tailored to your model. If these initial steps do not resolve the issue or if the diagnostics indicate a more complex problem, it may be time to seek assistance from a qualified mechanic or an authorized Mercedes-Benz service center. By following this structured approach, you can effectively diagnose the check engine light and take informed steps toward resolution.

What are the common problems that could cause the check engine light to illuminate in a 2017 Mercedes-Benz AMG GT S?

When the check engine light comes on in a 2017 Mercedes-Benz AMG GT S, it can indicate several common issues that DIYers should be aware of. One frequent culprit is a faulty oxygen sensor, which can disrupt the air-fuel mixture and negatively impact engine performance. Another simple yet often overlooked issue is a loose gas cap; ensuring it is securely fastened can prevent fuel vapor leaks and improve fuel efficiency. Additionally, problems with the catalytic converter, such as inefficiency or failure, can also trigger the light, potentially leading to decreased engine performance. A malfunctioning mass airflow sensor is another possibility, as it can affect the air-fuel mixture and cause performance issues. Lastly, worn or faulty spark plugs can lead to engine misfires and rough idling, prompting the check engine light to illuminate. Addressing these issues promptly is crucial to maintaining the vehicle's performance and preventing further damage, making it essential for DIY enthusiasts to diagnose and resolve these common problems effectively.

How urgent is it to address the check engine light in a 2017 Mercedes-Benz AMG GT S?

When the check engine light illuminates in your 2017 Mercedes-Benz AMG GT S, it signals a need for immediate attention, as neglecting this warning can lead to serious repercussions. Ignoring the light may result in diminished fuel efficiency and performance issues, which can escalate into more significant engine damage over time. The sophisticated onboard diagnostics systems in modern vehicles, including your AMG GT S, are designed to help identify the specific issues causing the warning, making it easier for DIY enthusiasts to troubleshoot. However, while some minor issues may be manageable at home, it is crucial to recognize that certain problems could pose safety risks or lead to costly repairs if left unaddressed. Therefore, taking the initiative to diagnose and resolve the underlying cause of the check engine light promptly is essential for maintaining the vehicle's performance and longevity. If you're unsure about the diagnosis or the necessary repairs, consulting a qualified mechanic is always a wise choice to ensure your vehicle remains in optimal condition.

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.