2016 Chevrolet Equinox Has A Check Engine Light

Resolve Check Engine Light Issues in Your 2016 Chevrolet Equinox

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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 2016 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 2016 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 steps to diagnose the check engine light on a 2016 Chevrolet Equinox?

When faced with a check engine light on your 2016 Chevrolet Equinox, the first step is to conduct a visual inspection, starting with the gas cap. Ensure it is securely tightened and free from damage, as a faulty gas cap is a common and easily fixable issue that can trigger the light. If the gas cap appears fine, the next step involves using an OBD-II scanner, which you can connect to the vehicle's diagnostic port. This tool will retrieve error codes that provide insight into the underlying problem. Once you have the codes, take the time to research their meanings, either through the vehicle's manual or reputable online resources. Understanding these codes will help you identify whether the issue is related to the engine, transmission, or emissions system. If the problem remains unclear or seems too complex, seeking assistance from a qualified mechanic is advisable, as they possess the expertise and tools necessary for a thorough diagnosis. By following this structured approach, you can effectively troubleshoot the check engine light and determine the best course of action for repairs.

What are the common problems that could cause the check engine light to illuminate in a 2016 Chevrolet Equinox?

When the check engine light comes on in a 2016 Chevrolet Equinox, it can be a source of concern for any DIY enthusiast. One of the most straightforward issues to check is the gas cap; a loose or damaged cap can easily trigger the light, so ensuring it is secure is a good first step. If that’s not the issue, consider the oxygen sensor, which monitors the exhaust and can fail over time, leading to increased emissions and reduced fuel efficiency. Another critical component to inspect is the catalytic converter, as any inefficiencies or failures here can significantly impact vehicle performance. Additionally, the mass airflow sensor plays a vital role in regulating the air-fuel mixture, and a malfunction can cause the engine to run poorly. Spark plugs and ignition coils are also common culprits; if they are worn or faulty, they can lead to misfires and trigger the check engine light. Lastly, a malfunctioning thermostat can affect engine temperature regulation, potentially causing the light to illuminate. Addressing these issues promptly not only helps in diagnosing the problem but also prevents further damage to your vehicle, ensuring it runs smoothly.

How urgent is it to address the check engine light in a 2016 Chevrolet Equinox?

When the check engine light comes on in your 2016 Chevrolet Equinox, it is essential to take immediate action. A flashing light often signals a serious issue, such as a catastrophic engine misfire, which can lead to significant motor damage if left unchecked. Ignoring this warning can escalate minor problems into major repairs, resulting in costly fixes and extended downtime for your vehicle. To effectively assess the situation, using an OBD-II scanner can provide valuable insights by revealing the specific error codes associated with the light. This diagnostic tool can help you determine whether the issue is something you can address yourself or if it requires professional intervention. By prioritizing the check engine light, you not only safeguard your vehicle's performance but also enhance its longevity, ensuring a safer and more reliable driving experience.

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