2024 Nissan LEAF Has A Check Engine Light

Troubleshooting the Check Engine Light in Your 2024 Nissan LEAF: Common Causes and Solutions

Find Repair Location
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 2024 Nissan LEAF 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 2024 Nissan LEAF 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.

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 2024 Nissan LEAF?

To effectively diagnose the check engine light on your 2024 Nissan LEAF, start with a thorough visual inspection of the vehicle. Begin by checking the gas cap; ensure it is securely tightened and free from damage, as a loose or faulty gas cap is a common trigger for the check engine light. Next, utilize an OBD-II scanner to connect to the vehicle's diagnostic port, which will allow you to retrieve any error codes stored in the car's computer. These codes are invaluable for pinpointing the specific issue at hand. Additionally, pay attention to any other symptoms your vehicle may exhibit, such as strange noises or performance changes, as these can provide further clues. Don’t forget to consult your owner’s manual, which can offer insights into what the check engine light may signify and suggest potential next steps. If these initial steps do not lead to a resolution, or if the problem appears to be more complex, seeking assistance from a qualified mechanic is advisable to ensure proper diagnosis and repair. By following this structured approach, you can effectively troubleshoot the check engine light and take the necessary steps toward resolving the issue.

What are the common problems that could cause the check engine light to illuminate in a 2024 Nissan LEAF?

When the check engine light illuminates in a 2024 Nissan LEAF, it serves as a crucial alert for drivers to investigate potential issues that could affect vehicle performance. One of the most straightforward checks is to ensure the gas cap is tightly secured, as a loose cap can lead to fuel vapor leaks. If the gas cap is in place, the next area to examine is the oxygen sensor, which plays a vital role in regulating fuel efficiency and emissions; a malfunction here can trigger the warning light. Additionally, problems with the catalytic converter, such as inefficiency or failure, can also cause the check engine light to activate. Other common issues include worn spark plugs that can hinder engine performance, and a malfunctioning mass airflow sensor that disrupts the air-fuel mixture, leading to further complications. Ignition coil failures may result in engine misfires, while a faulty thermostat can cause overheating, both of which will illuminate the check engine light. Other potential causes include issues with the EGR valve, battery or charging system malfunctions, and even transmission problems. By being aware of these common issues, DIY enthusiasts can take proactive steps to diagnose and address the underlying causes of the check engine light, ensuring their Nissan LEAF operates smoothly and efficiently.

How urgent is it to address the check engine light on a 2024 Nissan LEAF?

Addressing the check engine light on a 2024 Nissan LEAF is not just a matter of convenience; it is a critical step in ensuring the vehicle's longevity and safety. When this warning light illuminates, it signals potential issues that could range from minor sensor malfunctions to serious engine problems. Ignoring this alert can lead to decreased fuel efficiency and may escalate into costly repairs or even safety hazards while driving. For DIY enthusiasts, it is essential to understand that modern vehicles, including the LEAF, are equipped with sophisticated electronic systems that require prompt attention. By diagnosing the issue early, you can often resolve minor problems before they develop into major complications. Therefore, if you see the check engine light, take immediate action—whether that means using an OBD-II scanner to read the error codes or consulting a professional mechanic—to ensure your vehicle remains in optimal condition and safe for the road.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

2024 Nissan LEAF Check Engine Light: Causes & Solutions