![]() You can pay a local mechanic to read the codes or visit a local auto parts store for free code scanning. If you don’t have a code scanner, there are other ways to see what was set. Connecting your compatible scanner to the OBD-II port under the steering wheel can reveal what’s happening. ![]() The best way to figure out what’s wrong is to check the codes from the computer. However, we do have some steps that will make the process easier.Ĭonsider these suggestions. It’s impossible to estimate what kind of repair is needed to turn off the Check Engine Light on your Jeep without knowing what’s causing the problem. How To Fix A Check Engine Light On A Jeep? If the situation gets too bad, you may not be able to start your Jeep. Ignition coils endure a lot of heat and abuse, so they will eventually fail and turn on the Check Engine Light. ![]() The ignition coils are part of this system, working hand-in-hand with the spark plugs. The Jeep’s ignition system is designed to create a spark that ignites the fuel-air mixture. The only solution will be to replace the catalytic converter if you want to turn off the Check Engine Light. Over time, the catalysts in the converter degrade and no longer perform their job. Chemical reactions occur within the catalytic converter to ensure the exhaust does less damage to the environment. The Jeep’s catalytic converter is meant to alter exhaust gases, so they have fewer harmful substances included. You may also notice trouble with rough acceleration, a stalling engine or decreased fuel economy. What you are left with is the Check Engine Light on your Jeep dashboard. If the oxygen sensors malfunction, the computer is going to make unnecessary adjustments. The oxygen sensors are also needed to regulate the fuel being injected into the system. It will also lead to a rough performance and a significant drop in fuel economy as the engine works harder. When this sensor fails, the wrong combination of air-fuel enters the combustion chamber.Ī failing MAF sensor will cause your Jeep’s Check Engine Light to come on. It sends signals to the computer telling it how much fuel to inject. The mass air flow (MAF) sensor measures the air mass that flows in the engine intake. It can also cause a decrease in fuel economy. It also causes a drop in performance, higher emissions and sometimes a knocking sound. If the EGR valve fails, you will notice several symptoms, including a Check Engine Light. The exhaust gas recirculation (EGR) valve is a vital part of the emissions system in your Jeep. That’s why it’s best to fill up only after shutting down the engine. When you remove the gas cap, a fault can be detected by the engine, signifying a leak. Sadly, the gas cap takes a lot of abuse or it can easily be left behind while filling up.Įven if the gas cap is working well, it can lead to trouble if you fill up with your engine running. If the gas cap is loose, cracked or damaged, the EVAP system will detect a leak. The gas cap helps create a seal to keep fuel fumes at bay. However, the most common causes are a loose gas cap, a bad EGR valve, a bad MAF sensor, a bad oxygen sensor, a worn-out catalytic converter or a bad ignition coil. For that reason, many issues cause the warning. The Check Engine Light comes on whenever the systems send out an abnormal reading. What Are Some Common Causes Of A Check Engine Light On A Jeep? This is different from the solid Check Engine Light, which may indicate anything from a minor to a serious fault. If you continue to drive with the flashing Check Engine Light, you could allow serious damage to occur. As soon as you see the flashing indicator light, you should stop driving your vehicle and read the DTCs with your scanner. What Does A Flashing Check Engine Light On Jeep Mean?Ī flashing Check Engine Light indicates a serious fault that needs immediate attention. This DTC can be read by a compatible scanner, and you can figure out what it means by using our trouble code library. When something triggers the computer, a code is set at the same time that the Check Engine Light comes on. Numerous sensors monitor major vehicle systems and send a message to the computer if something goes wrong. This warning message comes on to tell you that there’s a problem with the vehicle. The Check Engine Light is otherwise known as the Malfunction Indicator Lamp (MIL). What Does A Check Engine Light Mean On A Jeep? Our guide also covers the top causes, the best fixes and we answer some of the most common questions. We show you what a flashing light means and explain why you should take it seriously. In this guide, we cover the meaning of the Check Engine Light on Jeep vehicles. Yet, this Jeep warning light can mean so many things, making it difficult to figure out. This warning is meant to get your attention so you fix the problem right away. When you are heading down the road and see the Jeep Check Engine Light, you are sure to be worried.
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