2017 Ford Explorer Has A Check Engine Light

Resolve Check Engine Light Issues in Your 2017 Ford Explorer

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Reviewed by
Bo Fader
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 Ford Explorer 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 Ford Explorer 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 steps to diagnose the check engine light issue in a 2017 Ford Explorer?

To effectively diagnose the check engine light issue in your 2017 Ford Explorer, start with a thorough visual inspection of the vehicle. Begin by checking the gas cap, as a loose or damaged cap is a common and easily fixable cause of the warning light. If the gas cap appears secure, the next step is to utilize an OBD-II scanner, which you can connect to the vehicle's OBD port. This tool will retrieve specific error codes that indicate the underlying problem. Once you have the error code, research its meaning through the vehicle's manual or reputable online resources to gain a clearer understanding of the issue at hand. Depending on the code, you may need to inspect related components such as the oxygen sensor, catalytic converter, or spark plugs. If your investigation does not lead to a clear solution or if the problem seems complex, it is advisable to seek assistance from a professional mechanic who can provide a more in-depth diagnosis and repair. By following this structured diagnostic approach, you can efficiently identify and address the cause of the check engine light in your Ford Explorer.

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

When the check engine light comes on in a 2017 Ford Explorer, it can be a source of concern for any DIY car owner. One of the most frequent culprits is a loose gas cap, which is an easy fix that can save you from unnecessary trips to the mechanic. Another common issue is a faulty oxygen sensor, which plays a crucial role in regulating the vehicle's emissions and fuel efficiency. If the sensor is malfunctioning, it can lead to poor engine performance and increased fuel consumption. Additionally, problems with the catalytic converter can also trigger the check engine light; this component is vital for reducing harmful emissions, and any inefficiency can indicate a more serious issue. Other potential causes include a malfunctioning mass airflow sensor, which measures the amount of air entering the engine, and worn-out spark plugs or ignition coils that can lead to engine misfires. Lastly, issues with the EGR valve, responsible for recirculating exhaust gases, can also illuminate the check engine light. Addressing these problems promptly is essential to maintain your vehicle's performance and prevent further damage, making it worthwhile for DIY enthusiasts to familiarize themselves with these common issues.

How urgent is it to address the check engine light in a 2017 Ford Explorer?

When the check engine light illuminates in your 2017 Ford Explorer, it is essential to recognize the urgency of the situation. This warning signal can indicate a range of issues, from minor sensor malfunctions to serious engine problems that could compromise your vehicle's performance and safety. Ignoring this light may lead to decreased fuel efficiency and potentially escalate into more significant repairs, which can be costly and time-consuming. 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. This proactive approach not only helps in identifying the problem but also allows you to take informed steps towards a solution, whether that involves simple fixes or seeking professional assistance. By addressing the check engine light promptly, you can ensure your Ford Explorer remains reliable and safe on the road, ultimately saving you time and money in the long run.

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