2010 Acura TL Has A Check Engine Light

Troubleshooting the Check Engine Light in Your 2010 Acura TL: 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 2010 Acura TL 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 2010 Acura TL 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 initial diagnostic steps to take for a check engine light on a 2010 Acura TL?

When faced with a check engine light on your 2010 Acura TL, it's essential to adopt a systematic diagnostic approach to identify the underlying issue. Begin by checking the gas cap; a loose or damaged cap is a common culprit that can easily trigger the light. Next, take a moment to observe the dashboard gauges for any unusual readings, as these can provide clues about potential problems. Utilizing an OBD-II scanner is a crucial step, as it allows you to retrieve error codes from the vehicle's computer, offering specific insights into what might be wrong. Additionally, inspecting the condition of the spark plugs is vital, as worn or faulty plugs can contribute to engine performance issues. Don't forget to check the levels of essential fluids like oil and coolant, as low levels can lead to significant engine complications. If these initial steps do not resolve the issue, it may be time to consult a qualified mechanic for a more comprehensive diagnosis. By following this structured approach, you can effectively narrow down the cause of the check engine light and take informed action to rectify the problem.

What are the common problems that could cause the check engine light to illuminate in a 2010 Acura TL?

When the check engine light comes on in a 2010 Acura TL, 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 often be overlooked. Another common issue is a faulty oxygen sensor, which not only triggers the light but can also impact fuel efficiency, making it essential to address. Additionally, problems with the catalytic converter can lead to significant performance issues, so it's crucial to check for any signs of failure. Misfiring due to faulty spark plugs or ignition coils is another reason the check engine light may illuminate, and replacing these components can restore engine performance. A malfunctioning mass airflow sensor can also affect how the engine runs, while issues with the exhaust gas recirculation (EGR) system, such as a clogged valve, can trigger the light as well. Understanding these common problems can empower DIY enthusiasts to take the first steps in diagnosing and potentially fixing the issues that cause the check engine light to illuminate, ensuring their Acura TL runs smoothly.

What are the potential risks of ignoring the check engine light in a 2010 Acura TL?

Ignoring the check engine light in your 2010 Acura TL can lead to serious repercussions that extend beyond mere inconvenience. When this warning light illuminates, it often signals underlying issues that, if left unaddressed, can escalate into major problems. For instance, a seemingly minor fault, such as a loose gas cap or a dirty air filter, can evolve into costly repairs, including engine damage or decreased fuel efficiency. Moreover, a flashing check engine light is a critical alert indicating potential motor damage, necessitating immediate action to prevent further complications. Neglecting these warnings not only jeopardizes your vehicle's performance but also poses safety risks on the road. Additionally, if you plan to pass emissions tests, an active check engine light can lead to automatic failure, complicating your vehicle's compliance with state regulations. Therefore, it is essential to take the check engine light seriously and address any issues promptly to ensure the safety, efficiency, and longevity of your Acura TL.

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.