2019 Land Rover Discovery Has A Check Engine Light

Resolve Check Engine Light Issues in 2019 Land Rover Discovery

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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 2019 Land Rover Discovery 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 Land Rover Discovery 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 2019 Land Rover Discovery?

When faced with a check engine light on your 2019 Land Rover Discovery, it's essential to approach the diagnosis methodically. Start by visually inspecting the gas cap, as a loose or damaged cap is a common culprit that can easily trigger the warning light. Next, check your dashboard for any additional warning indicators or messages that might provide further insight into the problem. Utilizing an OBD-II scanner is a crucial step; by connecting it to your vehicle's onboard diagnostic system, you can retrieve specific error codes that will help you pinpoint the issue. Pay attention to any unusual symptoms your vehicle may be exhibiting, such as rough idling or decreased performance, as these can offer valuable clues. Finally, consult your owner's manual for guidance on interpreting the error codes and recommended troubleshooting steps. By following these initial diagnostic steps, you can gather the necessary information to address the check engine light effectively and potentially save on repair costs.

What are the common problems that could cause the check engine light to illuminate in a 2019 Land Rover Discovery?

When the check engine light illuminates in a 2019 Land Rover Discovery, it signals that something may be amiss under the hood, prompting DIY enthusiasts to investigate further. One of the most common issues is a loose gas cap, which can easily be tightened or replaced to restore proper fuel system function. Another frequent offender is a faulty oxygen sensor; this component is crucial for maintaining fuel efficiency and minimizing emissions, and its failure can lead to noticeable performance drops. Additionally, problems with the catalytic converter can trigger the check engine light, often indicating a more serious issue that may require professional attention. A malfunctioning mass airflow sensor can also disrupt the delicate balance of air and fuel in the engine, leading to performance issues. Furthermore, worn spark plugs and faulty ignition coils can cause rough idling and misfires, both of which are common reasons for the check engine light to activate. By understanding these potential problems, you can take proactive steps to diagnose and address the issue, ensuring your Land Rover Discovery remains in optimal condition.

How urgent is it to address the check engine light on a 2019 Land Rover Discovery?

Addressing the check engine light on a 2019 Land Rover Discovery is not just a matter of convenience; it is a critical step in maintaining the vehicle's health and safety. The check engine light can signal a range of issues, from minor sensor malfunctions to serious engine problems that could compromise the vehicle's performance and safety. Ignoring this warning can lead to more severe damage, resulting in costly repairs that could have been avoided with timely intervention. Moreover, some issues indicated by the check engine light may directly affect the vehicle's drivability, making it essential to act quickly. For DIY enthusiasts, utilizing an OBD-II scanner can help identify the specific trouble codes associated with the warning light, allowing for informed troubleshooting. However, it is crucial to remember that while some issues may be simple fixes, others may require professional expertise to ensure the vehicle remains safe and reliable on the road. Therefore, addressing the check engine light promptly not only protects your investment but also ensures a safer driving experience.

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