2023 Mitsubishi Outlander PHEV Has A Check Engine Light

Resolve Check Engine Light Issues in 2023 Mitsubishi Outlander PHEV

Find Repair Location
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 2023 Mitsubishi Outlander PHEV 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 2023 Mitsubishi Outlander PHEV 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 2023 Mitsubishi Outlander PHEV?

When the check engine light illuminates on your 2023 Mitsubishi Outlander PHEV, the first step is to check the gas cap, as a loose or improperly sealed cap is a common and easily fixable issue that can trigger the light. Next, examine the dashboard for any additional warning lights or messages that may offer further insights into the problem. If these initial checks do not resolve the issue, using an OBD-II scanner to retrieve error codes from the vehicle's computer system is essential; these codes provide specific information about what might be malfunctioning. Additionally, inspect the spark plugs for wear, as faulty plugs can also cause the check engine light to activate. It's also important to verify that all essential fluid levels—such as oil, coolant, and transmission fluid—are adequate, as low levels can lead to engine performance issues. Finally, take a moment to visually inspect the wiring and connections under the hood for any signs of damage that could be causing electrical problems. By systematically following these steps, you can effectively diagnose and potentially resolve the issue triggering the check engine light, saving time and money on professional diagnostics.

What are the common problems that could cause the check engine light to illuminate in a 2023 Mitsubishi Outlander PHEV?

When the check engine light comes on in your 2023 Mitsubishi Outlander PHEV, 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 securely fastened. If the gas cap is not the culprit, consider inspecting the oxygen sensor, as a faulty sensor can disrupt the vehicle's air-fuel mixture and lead to increased 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. Spark plugs and ignition coils are critical components of the ignition system, and if they are worn or malfunctioning, they can cause misfires that trigger the warning light. Lastly, issues with the mass airflow sensor can affect engine performance, leading to the check engine light being activated. While some of these problems can be addressed with basic DIY skills, it is crucial to monitor the situation closely and consult a qualified mechanic if the light persists, ensuring your vehicle remains in optimal condition.

How urgent is it to address the check engine light in a 2023 Mitsubishi Outlander PHEV?

Addressing the check engine light in your 2023 Mitsubishi Outlander PHEV is not just a matter of convenience; it is a critical step in ensuring your vehicle's safety and longevity. Ignoring this warning can lead to escalating problems, including severe engine damage and costly repairs. The check engine light is designed to alert you to issues within the engine or emissions system, and modern vehicles are equipped with advanced diagnostic tools that can help you identify the root cause of the problem. By taking immediate action, you can prevent further complications such as decreased fuel efficiency and performance issues, which can compromise your driving experience and safety. For DIY enthusiasts, this means that timely diagnostics and repairs can save you both time and money, allowing you to maintain your vehicle in optimal condition. Therefore, if your check engine light comes on, it is essential to investigate the issue promptly to avoid more significant problems down the road.

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.