2019 Ford F-150 Has A Check Engine Light

Resolve Check Engine Light Issues in Your 2019 Ford F-150

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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 2019 Ford F-150 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 Ford F-150 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 steps to diagnose the check engine light on a 2019 Ford F-150?

When diagnosing the check engine light on a 2019 Ford F-150, it's crucial to follow a methodical diagnostic approach that emphasizes simpler solutions first. Begin by checking for any additional warning lights on the dashboard, as these can provide important context about the issue at hand. Next, inspect the gas cap to ensure it is properly tightened, since a loose or damaged gas cap is a frequent cause of the check engine light activation. Additionally, conduct a visual inspection of the vehicle for any signs of damage, such as leaks or loose wiring, which may point to underlying problems. Utilizing an OBD-II diagnostic scanner is an essential step in this process, as it enables you to retrieve error codes from the vehicle's computer system. After obtaining the codes, research their meanings using the vehicle's manual or reliable online resources to better understand the potential issues. If these preliminary steps do not yield a clear diagnosis, it may be wise to consult a mechanic for a professional evaluation and repair. By adhering to this structured approach, you can effectively identify and address the cause of the check engine light on your Ford F-150, ensuring a smoother and more efficient troubleshooting process.

What are the common problems that could cause the check engine light to illuminate in a 2019 Ford F-150?

When the check engine light comes on in your 2019 Ford F-150, it can be a source of concern, but understanding the common problems can help you address the issue effectively. One of the simplest causes could be a loose gas cap, which is easily fixable by ensuring it is tightened properly. If the light persists, consider checking the oxygen sensor, as a faulty sensor can lead to poor fuel efficiency and may require replacement. Additionally, issues with the catalytic converter can also trigger the light, often indicating a need for professional inspection. Spark plug or ignition coil problems are another frequent culprit, as they can cause engine misfires; replacing these components can often resolve the issue. A malfunctioning mass airflow sensor can disrupt the air-fuel mixture, leading to performance issues, while problems with the exhaust gas recirculation (EGR) system, such as a clogged valve, can also illuminate the check engine light. While some of these issues can be tackled with basic DIY skills, it’s crucial to diagnose the problem accurately to prevent further damage to your vehicle. If you're unsure, consulting a qualified mechanic is always a wise choice to ensure your F-150 runs smoothly.

How urgent is it to address the check engine light on a 2019 Ford F-150?

When the check engine light illuminates on your 2019 Ford F-150, it is crucial to take immediate action rather than dismissing it as a minor inconvenience. This warning light is your vehicle's way of signaling potential issues within the engine or emissions system, which, if ignored, could escalate into more severe problems. While some triggers, like a loose gas cap, may seem trivial, others could indicate significant mechanical failures that could compromise your vehicle's performance and safety. Delaying diagnosis and repair can lead to decreased fuel efficiency and increased emissions, not to mention the risk of incurring costly repairs down the line. For DIY enthusiasts, the first step is to use an OBD-II scanner to retrieve diagnostic trouble codes, which can provide insight into the underlying issue. However, if the codes indicate a serious problem, consulting a qualified mechanic is advisable to ensure that the necessary repairs are made promptly. Addressing the check engine light without delay not only helps maintain your F-150's health but also ensures a safer driving experience.

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