2015 Chevrolet Trax Has A Check Engine Light

Troubleshooting the Check Engine Light in Your 2015 Chevrolet Trax: Common Causes and Solutions

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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 2015 Chevrolet Trax 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 2015 Chevrolet Trax 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 2015 Chevrolet Trax?

When faced with a check engine light on your 2015 Chevrolet Trax, it's essential to approach the diagnosis methodically. Start by visually inspecting the gas cap, as a loose or damaged cap is a common and easily fixable issue that can trigger the light. Next, utilize an OBD-II diagnostic scanner to read the error codes, which will provide specific insights into the problem. After that, check the levels of vital fluids like engine oil and coolant, as low levels can also cause the light to illuminate. Don’t forget to inspect the battery connections; clean and secure terminals are crucial for proper vehicle function. Lastly, be attentive to any unusual noises or odors, as these can signal underlying issues that may need further investigation. By following these steps, you can effectively narrow down the potential causes of the check engine light and take appropriate action.

What are the common problems that could cause the check engine light to illuminate in a 2015 Chevrolet Trax?

When the check engine light comes on in your 2015 Chevrolet Trax, it can be a source of concern, but understanding the common issues can help you troubleshoot effectively. One of the simplest fixes is checking the gas cap; a loose or damaged cap can easily trigger the light, and ensuring it is tightened may resolve the problem. If the light persists, consider the oxygen sensor, as a faulty one can significantly affect your vehicle's fuel efficiency and emissions. Additionally, issues with the catalytic converter, such as inefficiency or failure, can also cause the warning light to illuminate. Engine performance can be compromised by worn-out spark plugs, which may lead to misfires and trigger the light as well. Another potential culprit is the mass airflow sensor; if it malfunctions, it can disrupt the air-fuel mixture, resulting in the check engine light turning on. Lastly, a failing ignition coil can lead to performance issues and should be inspected if the light remains illuminated. While these are common problems, it is advisable to have a professional mechanic diagnose the issue for a precise resolution, especially if DIY attempts do not yield results.

How urgent is it to address the check engine light in a 2015 Chevrolet Trax?

Addressing the check engine light in a 2015 Chevrolet Trax is crucial for maintaining the vehicle's health and safety. This warning light is not just a minor inconvenience; it can indicate a range of issues from simple sensor malfunctions to serious engine problems that could compromise your vehicle's performance. Ignoring the check engine light can lead to more severe damage, resulting in costly repairs and potentially leaving you stranded. Moreover, certain conditions, such as engine misfires or overheating, require immediate attention to prevent further complications. By taking action as soon as the light illuminates, you not only safeguard your vehicle's efficiency and longevity but also ensure your safety on the road. Therefore, it is essential to diagnose and resolve any underlying issues promptly to avoid escalating problems and maintain the reliability of your Chevrolet Trax.

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