If the check engine light is solid, it may indicate a lower severity issue, while a flashing check engine light should be addressed immediately. The most common reason for the check engine light to come on is a failing oxygen sensor.
Other possible causes include a dirty mass airflow sensor, faulty emissions control part, damaged oxygen sensor, malfunctioning fuel injection system, faulty head gasket, or defective spark plugs. It is important to have your vehicle diagnosed and repaired by a trusted auto repair shop to resolve the issue and prevent further damage to your vehicle.
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Common Reasons For Check Engine Light
When it comes to the mysterious check engine light, it’s essential to understand the common reasons behind its illumination. By knowing these common causes, you can better diagnose and address the issue to ensure your 2018 Dodge Durango runs smoothly for years to come.
Oxygen Sensor Failure
An oxygen sensor failure is one of the most frequent reasons for the check engine light to come on. The oxygen sensor plays a vital role in measuring unburned oxygen in the exhaust system. When this sensor fails, it can lead to decreased fuel efficiency and potential damage to other engine components.
Emissions/exhaust System Issue
If your check engine light is on, your emissions or exhaust system could be to blame. An exhaust leak or a malfunction in the catalytic converter may trigger the check engine light. These issues can impact the overall performance of your vehicle and contribute to higher emissions levels.
Fuel Injection System Malfunction
The fuel injection system is responsible for delivering fuel to the engine for combustion. If this system malfunctions, it can cause a range of issues, including a check engine light. Problems with the fuel injection system lead to decreased fuel efficiency, rough idling, and potential engine damage.
Other potential causes for the check engine light to come on include a dirty mass airflow sensor, a faulty emissions control part, a damaged oxygen sensor, a malfunction in the fuel injection system, a faulty head gasket, or defective spark plugs. It’s crucial to address these issues promptly to avoid further damage to your vehicle.
Remember, while a solid check engine light may indicate a lower severity issue, it’s still essential to address the problem. If the light is flashing, however, it signifies a severe engine misfire, and immediate attention is necessary.
When your check engine light comes on, it’s always a good idea to take your vehicle to a trusted auto repair shop with expertise in Dodge Durango diagnostics and repairs. They can perform a thorough inspection and use diagnostic services to pinpoint and resolve the issue.
By understanding the common reasons for the check engine light and taking prompt action when it illuminates, you can ensure the longevity and optimal performance of your 2018 Dodge Durango.
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Severity Of Check Engine Light
A check engine light is a warning sign that something is not functioning correctly in your 2018 Dodge Durango. Understanding the severity of the check engine light is crucial for determining the urgency of the issue and taking appropriate action. In this section, we will discuss the different levels of severity associated with the check engine light, including solid and flashing lights.
Solid Light
A solid check engine light typically indicates a lower severity issue compared to a flashing light. However, it is still essential to address the problem promptly by scheduling an appointment with a qualified mechanic. Ignoring a solid check engine light can result in more significant damage to your vehicle in the long run, leading to costly repairs.
Flashing Light
A flashing check engine light is a sign of a severe problem that requires immediate attention. It usually indicates a severe engine misfire, allowing unburned fuel to be dumped into the exhaust system. Driving your Dodge Durango with a flashing check engine light can cause further damage to the engine or emissions system.
- Immediate steps should be taken to protect your vehicle and prevent further issues.
- Reduce your speed and avoid heavy acceleration or deceleration.
- Try to find a safe place to pull over and turn off the engine.
- Contact a professional mechanic or your local Dodge dealership for assistance.
Remember, a flashing check engine light should not be ignored to ensure the safety and performance of your 2018 Dodge Durango. Taking prompt action can help prevent more significant problems and unnecessary repair expenses.
Actions To Take When Check Engine Light Comes On
The check engine light illuminating on the dashboard is a signal that your vehicle’s onboard computer system has detected a problem. When this warning light comes on, it is essential to take the appropriate actions promptly to address the issue. Ignoring a check engine light can lead to more severe and costly damage down the road. Here are key steps to take when the check engine light comes on.
Immediate Attention Needed
If the check engine light comes on, it’s crucial to evaluate the severity of the issue. Look for any signs of a serious problem such as the engine overheating or unusual sounds. If immediate attention is required, pull over to a safe location and turn off the engine.
Check Gas Cap
Inspect the gas cap to ensure it is tightly sealed. A loose or damaged gas cap can cause the check engine light to illuminate. Tighten the cap if necessary and continue driving. If the light persists, further investigation is needed.
Reduce Speed And Load
If possible, reduce your speed and the vehicle’s load. Driving at lower speeds and minimizing the demand on the engine can help mitigate potential issues while you seek assistance or reach a service center.
Use Diagnostic Services
If your vehicle is equipped with built-in diagnostic services, utilize these features to gather specific fault codes and information related to the check engine light. These codes can provide valuable insight for technicians and help expedite the diagnosis and repair process.
Check Engine Light Troubleshooting
When your check engine light comes on in your 2018 Dodge Durango, it can be a cause for concern. However, instead of panicking, it’s essential to follow a systematic approach to troubleshoot the issue. Here are some key steps you can take to diagnose and resolve the check engine light problem:
Testing Mass Airflow Sensor
The mass airflow sensor plays a crucial role in monitoring the amount of air entering the engine. Issues with a dirty or faulty mass airflow sensor can trigger the check engine light. To test the sensor, you can use a multimeter to check for any irregular readings and clean it if necessary.
Checking Emissions Control Parts
Issues with the emissions control parts can also lead to the check engine light coming on. Check for any damaged or faulty emissions control parts such as the EGR valve, PCV valve, or EVAP system. Replace any parts that are not functioning correctly to resolve the issue.
Inspecting Oxygen Sensor And Catalytic Converter
The oxygen sensor and catalytic converter are vital components of the exhaust system. A malfunctioning oxygen sensor or a faulty catalytic converter can trigger the check engine light. Inspect these components for any signs of damage or wear and replace them as needed.
Examining Fuel Injection System And Spark Plugs
The fuel injection system and spark plugs are responsible for delivering fuel and generating sparks for combustion. A malfunction in either of these systems can cause the check engine light to illuminate. Check for any fuel injection system issues or defective spark plugs and address them promptly.
By following these troubleshooting steps, you can identify and address the issue causing the check engine light to come on in your 2018 Dodge Durango effectively. Remember to consult a professional mechanic if you encounter any challenges during the diagnostic process.
Resetting Check Engine Light
When your Dodge Durango’s check engine light comes on, it can be concerning. Understanding how to reset this light can help troubleshoot the issue effectively.
Causes For Light Reset
- Dirty mass airflow sensor
- Faulty emissions control part
- Malfunction with the fuel injection system
Methods For Reset
- Locate the vehicle’s OBD-II port
- Use an OBD-II scanner to read and reset the codes
- Disconnect the car’s battery for a few minutes
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Frequently Asked Questions On 2018 Dodge Durango Check Engine Light
What Is The Most Common Reason For The Check Engine Light To Come On?
The most common reason for the check engine light to come on is a failing oxygen sensor in the exhaust system. This can be diagnosed and fixed by a local auto repair shop.
How Serious Is A Solid Check Engine Light?
A solid check engine light can vary in severity depending on your car’s make and model. However, it’s still important to address the issue by scheduling a diagnostic appointment and getting it fixed. If the check engine light is flashing, it indicates a more serious problem and you should get your car checked ASAP.
What Is The Most Probable Cause Of A Check Engine Light?
The most probable cause of a check engine light is a problem with the emissions/exhaust system, such as an exhaust leak or an issue with the catalytic converter. Another common cause is a malfunctioning mass airflow sensor (MAF). It’s best to have your vehicle diagnosed and repaired by a professional auto repair shop.
What To Do When Solid Check Engine Light Comes On?
When solid check engine light comes on, tighten the gas cap, check for immediate issues, and reduce speed. Use diagnostic services if available. Have a professional diagnose and fix the problem. A solid light may indicate lower severity, but a flashing light needs immediate attention.
Conclusion
The check engine light in your 2018 Dodge Durango can indicate various issues, from a simple loose gas cap to more severe engine misfires. It’s crucial to address the problem promptly and seek professional help to diagnose and resolve any underlying issues.
Remember to pay attention to your vehicle’s signals for a smooth and worry-free driving experience.
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