2023 Jeep Renegade Has A Check Engine Light

Troubleshooting the Check Engine Light in Your 2023 Jeep Renegade: Common Causes and Solutions

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Reviewed by
Devin Cabugcal
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 Jeep Renegade 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 Jeep Renegade 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 2023 Jeep Renegade?

When faced with a check engine light on your 2023 Jeep Renegade, it's essential to adopt a methodical diagnostic approach. Start by checking for visible issues, such as ensuring that the gas cap is securely tightened and free from damage, as this is a common trigger for the warning light. Next, utilize an OBD-II scanner to retrieve any error codes from the vehicle's computer; these codes can offer critical insights into the specific problems affecting your vehicle. Pay attention to any noticeable changes in performance, like rough idling or stalling, as these symptoms can help you narrow down potential causes. Additionally, inspect the levels of vital fluids, including oil and coolant, since low levels or leaks can also activate the check engine light. Finally, take a moment to visually examine the engine bay for any signs of damage, such as frayed wires or loose connections, which could indicate underlying issues. By following these steps, you can effectively diagnose the problem and determine whether it requires a simple fix or professional assistance.

What are the common problems that could cause the check engine light to illuminate in a 2023 Jeep Renegade?

When the check engine light comes on in your 2023 Jeep Renegade, it can be a source of concern, but understanding the common problems that may cause this warning can empower you to take action. One frequent culprit is a loose gas cap, which can lead to fuel vapors escaping and is easily fixed by ensuring the cap is tightened properly. Another common issue is a faulty oxygen sensor, which can negatively impact fuel efficiency and emissions; replacing this sensor can restore optimal performance. Additionally, problems with the catalytic converter, such as inefficiency or failure, can trigger the light, often requiring professional assessment. Spark plug or ignition coil issues can also lead to engine performance problems, and checking these components can be a straightforward DIY task. A malfunctioning mass airflow sensor disrupts the air-fuel mixture, while engine misfires, often caused by bad spark plugs or fuel injectors, can also illuminate the light. Other potential issues include problems with the EGR valve, a faulty thermostat affecting engine temperature, transmission problems, and even electronic control module (ECM) issues. Addressing these concerns promptly not only helps in diagnosing the check engine light but also ensures your Jeep Renegade runs smoothly and efficiently.

How urgent is it to address the check engine light in a 2023 Jeep Renegade?

When the check engine light illuminates in your 2023 Jeep Renegade, it is crucial to act swiftly, as this warning can signify a range of issues from minor to severe. Ignoring this alert can lead to decreased fuel efficiency and may escalate into more significant engine damage, which could result in costly repairs. Moreover, some underlying problems may pose safety risks, such as compromised braking or steering systems. For DIY enthusiasts, while it may be tempting to delay addressing the light, utilizing the vehicle's onboard diagnostics can help identify the specific issue. This proactive approach not only aids in maintaining the vehicle's performance but also ensures your safety on the road. Therefore, it is advisable to diagnose the problem as soon as possible, whether through a professional mechanic or by using a diagnostic tool, to prevent further complications and ensure your Jeep Renegade remains reliable and efficient.

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