2019 Subaru Crosstrek Has A Check Engine Light

Troubleshooting the Check Engine Light in Your 2019 Subaru Crosstrek: Common Causes and Solutions

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Reviewed by
Aisha
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 2019 Subaru Crosstrek 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 2019 Subaru Crosstrek 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.

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 2019 Subaru Crosstrek?

When faced with a check engine light on your 2019 Subaru Crosstrek, it's essential to approach the diagnosis methodically, starting with the simplest solutions. 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 your dashboard gauges for any unusual readings, as these can provide clues about underlying issues. 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 the problem. Additionally, inspect the condition of your spark plugs, since worn or faulty plugs can also activate the check engine light. Finally, ensure that all essential fluid levels—such as oil, coolant, and transmission fluid—are adequate, as low levels can lead to engine complications. By following these steps, you can effectively gather information to help identify the cause of the check engine light and potentially resolve the issue on your own.

What are the common problems that could cause the check engine light to illuminate in a 2019 Subaru Crosstrek?

When the check engine light comes on in your 2019 Subaru Crosstrek, it can be a source of concern, but understanding the common problems that may cause this warning can empower you to take action. One of the simplest issues to check is the gas cap; a loose or damaged cap can easily trigger the light, so ensure it is tightened properly. If the gas cap is secure, consider inspecting the oxygen sensor, as a faulty sensor can affect your vehicle's fuel efficiency and emissions. Additionally, problems with the catalytic converter, such as blockages or failures, can also illuminate the check engine light, indicating a need for further investigation. Worn-out spark plugs and malfunctioning ignition coils are other frequent culprits that can disrupt engine performance, so checking these components can be beneficial. Lastly, the mass airflow sensor and the exhaust gas recirculation (EGR) valve are critical to your engine's operation; issues with either can lead to the check engine light activating. By systematically checking these common problems, you can potentially identify the cause of the warning light and take the necessary steps to resolve it, ensuring your Subaru Crosstrek runs smoothly.

How urgent is it to address the check engine light in a 2019 Subaru Crosstrek?

When the check engine light illuminates in your 2019 Subaru Crosstrek, it is essential to recognize the urgency of the situation. This warning signal is not merely a nuisance; it indicates potential issues with your vehicle's engine or emissions system that could affect performance, fuel efficiency, and compliance with emissions standards. Ignoring this light can lead to more severe problems, including costly repairs or unexpected breakdowns. While some issues may be minor and easily fixable, it is crucial to investigate the cause promptly to prevent any underlying problems from escalating. Fortunately, modern vehicles like the Crosstrek are equipped with advanced onboard diagnostics that can help you identify the source of the issue. For DIY enthusiasts, this means you can use an OBD-II scanner to retrieve diagnostic trouble codes, allowing you to assess the situation before deciding whether to tackle the repair yourself or consult a professional. Addressing the check engine light in a timely manner not only safeguards your vehicle's health but also enhances your driving experience, making it a priority for any responsible car owner.

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