2023 Chevrolet Equinox Has A Check Engine Light

Troubleshooting the Check Engine Light in Your 2023 Chevrolet Equinox: 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 Chevrolet Equinox 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 Chevrolet Equinox 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 Chevrolet Equinox?

When faced with a check engine light on your 2023 Chevrolet Equinox, it's essential to approach the diagnosis methodically. Start by checking the gas cap, as a loose or damaged cap is a common and easily fixable issue that can trigger the light. Next, take a moment to inspect your dashboard gauges for any additional warning lights or irregular readings that might indicate other underlying problems. Utilizing an OBD-II scanner is a crucial step; it allows you to read the specific error codes associated with the check engine light, providing valuable insights into the issue at hand. Additionally, ensure that all essential fluid levels—such as oil, coolant, and transmission fluid—are within the recommended ranges, as low levels can lead to engine performance issues. A visual inspection of wiring and connections under the hood is also advisable, as damaged or loose wires can contribute to the problem. Finally, consulting your owner's manual can offer specific guidance related to the check engine light for your model, helping you understand the potential causes and recommended actions. By following these steps, you can effectively narrow down the cause of the check engine light and determine the best course of action for your vehicle.

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

When the check engine light comes on in your 2023 Chevrolet Equinox, it can be a source of concern, but understanding the common issues can empower you to take action. One frequent culprit is a loose gas cap, which can disrupt the vehicle's evaporative emissions system. Simply tightening or replacing the gas cap may resolve the issue. Another common problem is a faulty oxygen sensor, which can lead to poor fuel efficiency and increased emissions; if you notice a drop in performance, consider checking this sensor. Additionally, issues with the catalytic converter can trigger the light, as this component is essential for reducing harmful emissions. If you experience a rough engine performance, the mass airflow sensor might be malfunctioning, affecting the air-fuel mixture. Spark plug or ignition coil problems can also cause engine misfires, illuminating the check engine light. Lastly, a faulty thermostat can disrupt engine temperature regulation, leading to potential alerts. Addressing these issues promptly not only helps in turning off the check engine light but also ensures your vehicle runs smoothly and efficiently.

How urgent is it to address the check engine light in a 2023 Chevrolet Equinox?

When the check engine light illuminates in your 2023 Chevrolet Equinox, it is essential to recognize the urgency of the situation. This warning light is not merely a nuisance; it signals potential issues that could range from minor to severe, affecting your vehicle's engine and emissions system. Ignoring this alert can lead to decreased fuel efficiency and performance problems, which may escalate into more significant and costly repairs if left unaddressed. For DIY enthusiasts, 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, it is crucial to understand that some problems may require professional expertise to ensure proper diagnosis and repair. By addressing the check engine light promptly, you not only safeguard your vehicle's performance and efficiency but also enhance your safety on the road, preventing potential breakdowns or hazardous situations. Therefore, taking immediate action when the check engine light appears is vital for maintaining the health of your Chevrolet Equinox and ensuring a smooth driving experience.

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