If your check engine light turns on suddenly after you put gas in your 2014 Jeep Cherokee, first thing you should check is to make hopeful the cap isn’t loose — or that it's still on your car’s roof or at the fuel pump. Connect scan tool to the 16-pin data link connector (DLC) located near the steering column. This explosion is what moves the pistons and makes the engine run. Some cheaper scanners won’t work with every make and model, so it pays to do your research. Likewise, the check engine light could also be a warning of a alarming problem that could cause alarming wear and tear to your engine and come with a large repair bill. I have a 2016 Jeep Grand Cherokee 75 Anniversary Edition. If your Jeep Cherokee is having trouble starting, idling rough or has a sudden change in the position of the throttle pedal, this could be a sign of a bad mass airflow sensor. The fear of the unknown (or the value of the unknown) can be just as stressful. In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. The vast majority of cars use a single wire per cylinder, but there are models — notably, some older Mercedes-Benzes — with two spark plugs per cylinder, and consequently two wires. However, it does not replace a skilled mechanic or routine maintenance. Luckily, to replace a gas cap isn't expensive. Your vehicle may run at a higher temperature, too, which can cause disparate problems from overheating. Sometimes the codes are clearly explained; other times, you’ll need to do a bit of searching to figure out what something like P1301 means. The catalytic converter is a part of your 2014 Jeep Cherokee’s exhaust system. I am very scared terrified and nervous driving me Jeep. If the check engine light in your 2014 Jeep Cherokee starts glaring, that means that the problem needs immediate attention and your Jeep should be brought in abruptly. When the check engine light illuminates on your Jeep Liberty, it is the result of a problem code being sent from a sensor in the vehicle to the internal On-Board Diagnostics (OBD) computer. How to Reset Jeep Check Engine Light Upgrade your lifestyleDigital Trends helps readers keep tabs on the fast-paced world of tech with all the latest news, fun product reviews, insightful editorials, and one-of-a-kind sneak peeks.Digital Trends may earn a commission when you buy through links on our site. A bad, former or dirty spark plug can cause the engine to misfire. When your check engine light comes on, you should get it checked out instantly by a certified Jeep mechanic. Error codes don’t always tell the full story. Also, note that disconnecting the battery will often reset your stereo system. An engine will keep running even if an O2 sensor needs to be replaced, but it will burn more fuel than usual. This question is not very uncomplicated because it all depends on the severity of the issue. If there is excess oxygen in your exhaust system, fuel burns faster and your vehicle will be less lucid when it comes to fuel economy. It’s a fairly simple part, and its failure can often be prevented. Error codes are a useful diagnostic tool that can help you figure out where to start when your car needs a repair; just be careful to understand their limitations. The spark plugs are the part of your engine that ignites the air/fuel mixture in the combustion chamber of your vehicle. A loose fuel cap is one of the most common reasons why the check engine light turns on. The cap is a crucial part of a car’s fuel delivery system. If the problem is ignored or you continue to drive, this can spread to the spark plug wires, catalytic converter, or ignition coils which can lead to a very expensive repair. Symptoms of an MAF failure include a rough idle, trouble starting, and a sudden change in the position of the throttle pedal. As its name implies, a spark plug wire transfers electricity from the coil to the spark plug. Without a vehicle battery, your vehicle won’t start, light up the road ahead, play the radio or charge your phone. No tools required. And as always, keep your eyes and ears open for unusual sounds or discolored smoke coming from the exhaust. If your spark plugs or spark plug wires are bad or aged, you will experience poor performance and reduced power. Otherwise, you’ll be driving in silence. The check engine light provides an idea — sometimes precise, sometimes vague — of what’s wrong with a car. An aftermarket alarm, exhaust or disparate item can wreak havoc on your 2014 Jeep Cherokee if it’s not installed properly. The gas cap for your 2014 Jeep Cherokee serves multiple purposes. Get a free detailed estimate for a repair in your area. The check engine light is part of the onboard diagnostics system, and displays in a few precise ways. The convenient news, Crown Chrysler Dodge Jeep Ram Greensboro offers complimentary multi-point inspections and free diagnostics, in most cases, to help mean the cause of your check engine light. Getting it done right in the first place might cost a little bit more, but the peace of mind that comes with having a fully functional alarm is priceless. If you notice that your RPM is high in idle or randomly surges, a vacuum leak could be the cause. The connector may have a removable cover. The auto repair labor rates vary widely across the country, and even within the same city. Getting accessories, especially aftermarket. 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