2013 Toyota Tacoma Check Engine Light On

Resolve Check Engine Light Issues in Your 2013 Toyota Tacoma

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Reviewed by
Andrew Hajjar
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 2013 Toyota Tacoma 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 2013 Toyota Tacoma 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 2013 Toyota Tacoma?

When faced with a check engine light on your 2013 Toyota Tacoma, the first step is to check the gas cap, as a loose or improperly secured cap is a common culprit. If the cap is secure, observe the light's behavior; a steady light typically indicates a minor issue, while a flashing light signals a serious problem that requires immediate attention. Next, consider using an OBD-II code reader to retrieve any trouble codes stored in the vehicle's Electronic Control Module (ECM). This tool can help pinpoint specific issues related to sensors, the fuel system, or other components. Additionally, be aware of other symptoms your vehicle may exhibit, such as unusual noises or performance changes, which can provide further clues. If the light is flashing, it’s crucial to stop driving immediately to prevent potential damage and seek professional assistance if you're unsure about the diagnosis or if the problem persists after your initial checks. By following these steps, you can effectively troubleshoot the check engine light and determine whether a simple fix or professional help is needed.

What are the common problems that could cause the check engine light to illuminate in a 2013 Toyota Tacoma?

When the check engine light illuminates in a 2013 Toyota Tacoma, it can signal a range of issues that vary in severity. One of the most straightforward problems to check is the gas cap; a loose or damaged cap can lead to fuel vapor leaks, prompting the light to turn on. If the gas cap is secure, the next area to investigate is the ignition system, where faulty spark plugs or ignition coils may cause engine misfires. Additionally, a malfunctioning oxygen sensor can disrupt the air-fuel mixture, leading to performance issues and triggering the light. More serious concerns include a clogged catalytic converter, which can significantly affect fuel efficiency and engine performance. It's also essential to consider the fuel and air metering systems, as problems with fuel injectors or the mass airflow sensor can lead to improper combustion. Emissions control components, such as a failing head gasket, can also be culprits. In some cases, transmission issues or an aging battery may cause the check engine light to activate. Lastly, if the light is flashing, it indicates a critical problem, such as an engine misfire, which requires immediate attention to prevent further damage. By understanding these common problems, DIYers can take the first steps toward diagnosing and addressing the check engine light in their Tacoma.

How urgent is it to address the check engine light on my 2013 Toyota Tacoma?

When it comes to your 2013 Toyota Tacoma, understanding the urgency of the check engine light is crucial for maintaining your vehicle's health and safety. A steady glow typically signals a minor issue, such as a loose gas cap or worn spark plugs, which, while not immediately dangerous, should still be addressed to avoid further complications. On the other hand, a flashing check engine light is a serious warning that indicates a significant problem, such as an engine misfire, which can lead to costly damage if ignored. If you experience a flashing light, it’s essential to stop driving and seek professional help immediately. Additionally, any noticeable changes in your vehicle's performance, like rough idling or decreased power, should not be overlooked, as they often point to underlying issues that require prompt attention. By recognizing these signals and acting accordingly, you can prevent minor problems from escalating into major repairs, ensuring your Tacoma remains reliable and safe on the road.

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