2020 Acura NSX Has A Check Engine Light

Common Causes of the Check Engine Light in Your 2020 Acura NSX and How to Resolve Them

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Reviewed by
Devin Cabugcal
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 2020 Acura NSX 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 2020 Acura NSX 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 steps should I take to diagnose the check engine light on my 2020 Acura NSX?

When diagnosing the check engine light on your 2020 Acura NSX, it's crucial to follow a methodical approach that emphasizes simpler solutions first. Begin by checking for any additional warning lights on the dashboard, as these can offer valuable insights into specific issues. One of the most common triggers for the check engine light is a loose gas cap, so make sure it is securely fastened. Next, employ an OBD-II scanner to retrieve the error codes from your vehicle's computer system; this tool is essential for identifying the root cause of the warning. After obtaining the error codes, take the time to research their meanings using your vehicle's manual or reputable online resources, which will help you understand the potential problems at hand. Additionally, inspect basic components such as the air filter, spark plugs, and battery for any visible signs of wear or damage that could be affecting performance. If these preliminary steps do not resolve the issue, it may be prudent to seek the expertise of a professional mechanic who can conduct a more comprehensive diagnosis and repair. By adhering to this structured diagnostic strategy, you can effectively troubleshoot the check engine light and maintain the performance of your Acura NSX.

What are the common problems that could cause the check engine light to illuminate in a 2020 Acura NSX?

When the check engine light comes on in a 2020 Acura NSX, it can be a source of concern for any car owner. Understanding the common problems that may cause this warning light to illuminate is crucial for effective troubleshooting. One of the simplest 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. Another frequent culprit is the oxygen sensor, which monitors the exhaust and can fail over time, leading to increased emissions and reduced fuel efficiency. Additionally, problems with the catalytic converter, such as blockages or failures, can also activate the check engine light, indicating a need for further inspection. Worn spark plugs or ignition coils can cause misfires, which not only trigger the light but can also affect engine performance. Lastly, issues with the mass airflow sensor can disrupt the air-fuel mixture, leading to poor engine operation. While some of these problems can be addressed through DIY methods, it is essential to have a thorough understanding of the vehicle's systems and, if necessary, consult a qualified mechanic to ensure that the underlying issues are properly diagnosed and resolved.

How urgent is it to address the check engine light in a 2020 Acura NSX?

When the check engine light illuminates in your 2020 Acura NSX, it signals a potential issue that requires immediate attention. Ignoring this warning can lead to escalating problems, ranging from minor sensor malfunctions to severe engine damage, which can be costly to repair. For DIY enthusiasts, it's crucial to understand that while some issues may seem trivial, they can quickly escalate into significant safety risks or mechanical failures. Therefore, the urgency of diagnosing the problem cannot be overstated. Start by using 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 empowers you to make informed decisions about whether to tackle the repair yourself or seek professional assistance. Remember, timely action can save you from more extensive repairs and ensure your Acura NSX remains reliable on the road.

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