2014 Tesla S Has A Check Engine Light

Troubleshooting the Check Engine Light in Your 2014 Tesla Model S: Common Causes and Solutions

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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 2014 Tesla S 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 2014 Tesla S 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.

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 2014 Tesla S?

When faced with a check engine light on your 2014 Tesla Model S, it's crucial to approach the situation methodically to identify the underlying issue. Start by checking for any immediate problems, such as overheating or low oil pressure, as these can indicate serious concerns that need urgent attention. Next, inspect the gas cap; a loose or damaged cap is a common culprit that can trigger the light. If these initial checks do not resolve the issue, utilize an OBD-II scanner to read the error codes, which will provide specific insights into what might be wrong with your vehicle. Additionally, consulting the owner's manual can offer guidance on what the check engine light signifies and any manufacturer-recommended steps to take. If the problem persists or seems complicated, it may be wise to seek assistance from a qualified mechanic or Tesla service center to ensure a thorough diagnosis and repair. By following these steps, you can effectively troubleshoot the check engine light and take appropriate action to maintain your Tesla's performance.

What are the common problems that could cause the check engine light to illuminate in a 2014 Tesla S?

When the check engine light comes on in a 2014 Tesla Model S, it can signal a range of issues that are important to address for maintaining vehicle performance. One of the primary concerns could be battery-related problems, such as low voltage or a faulty battery pack, which are crucial for the vehicle's operation. Additionally, a malfunction in the charging system, whether it be the charger or the charging port, can also trigger this warning light. Software glitches are another common culprit; these can lead to erroneous alerts that may not indicate a real problem. Furthermore, sensor malfunctions, particularly those linked to the emissions system, can cause the check engine light to illuminate. Lastly, mechanical failures in critical components like the motor or inverter should not be overlooked, as these can significantly impact the vehicle's functionality. For those looking to DIY, it is advisable to start by checking the battery and charging systems, as well as running a diagnostic scan to identify any software or sensor issues. Addressing these problems promptly can help ensure the Tesla operates safely and efficiently.

How urgent is it to address the check engine light in a 2014 Tesla S?

When the check engine light illuminates in your 2014 Tesla Model S, it is essential to recognize the urgency of the situation. This warning light is not merely a nuisance; it indicates that there may be underlying issues with critical systems such as the electric drivetrain or battery. Ignoring this signal can lead to more severe complications, including costly repairs or even a breakdown, which could compromise your safety on the road. The sophisticated technology in electric vehicles like the Tesla Model S means that even minor issues can escalate quickly if left unaddressed. Therefore, it is advisable to consult your vehicle's manual for initial troubleshooting steps and to consider reaching out to a certified Tesla service center for a thorough diagnosis. Taking prompt action not only helps maintain the vehicle's performance but also ensures your safety and the longevity of your investment.

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2014 Tesla Model S Check Engine Light Causes & Solutions