The check engine light is the most misunderstood indicator on the Grand Cherokee. The check engine light extends the onboard linguistics system, and it displays in several ways. The signal can say “Check Engine,” can indicate an engine, or can be a combination of both.
The light will be red or amber and is part of the vehicle’s diagnostics system. The Jeep Grand Cherokee has computers onboard that control and monitors the vehicle’s performance. The computers control ignition timing, engine speed, stability control, and automatic transmission shifts.
On its part, a check engine can imply a variety of things. It may imply minor issues such as a loose gear cap or major issues such as engine knocking. It would help to contact a service department that will establish which code is turning on your check engine. They will also diagnose why the check engine is flashing.
Check Engine Light in a 2019 Jeep Cherokee
As mentioned earlier, the engine light can indicate a straightforward minor issue or a major issue. The Grand Cherokee will blink or illuminate depending on the make and model you drive. A steady glow usually indicates something that is not worth stressing about. On the other hand, a twinkling light may indicate your engine may have a significant problem that needs to be addressed.
If the check engine of your 2019 Jeep Cherokee is twinkling, it will be best if you schedule a service and not drive the vehicle. Here are some of the reasons your light engine might come on:
A Vacuum Leak
A vacuum system performs a range of functions. It helps in lowering the harmful emissions by routing the fumes. If your RPM surges suddenly, your Jeep could have a vacuum leak. Vacuum hoses typically dry out and crack on exposure to chilly weather or high heat levels.
Your MAF Needs Replacement
The mass airflow sensor, otherwise known as the MAF, determines the amount of fuel that needs to run your engine efficiently. The mass airflow sensor is part of the engine management system and helps the vehicle adjust to different conditions such as altitude changes.
When you have a bad mass airflow sensor, your Jeep Grand Cherokee may have trouble starting, idle rough, or develop a fast change in the throttle pedal. This could lead to the light engine coming on.
A Bad Catalyst Converter or One That Is Going Bad
Part of your 2019 Jeep Grand Cherokee’s exhaust system is the catalyst convertor. It converts the carbon monoxide created from combustion into carbon dioxide. The common cause of a damaged catalyst convertor is neglected maintenance.
If you do not address the issue with your catalyst convertor, your Grand Cherokee will have a low engine performance, fail the fuel emissions test, and have a low fuel economy. The vehicle may also overheat due to higher temperatures.
Problems with Aftermarket Items
If you acquired an aftermarket item such as exhaust, alarm, or other not properly installed items, they might result in your Jeep Grand Cherokee having problems. The items may turn on the check engine light, drain the battery, and even prevent the car from starting.
Your Oxygen Sensor Needs Replacement
This sensor measures the oxygen in the exhaust. Excess oxygen makes fuel burn faster and reduces the vehicle’s efficiency. If your oxygen sensor is faulty, it will damage your catalyst converter and the spark plugs and affect the miles you cover per gallon.
The oxygen sensor conveys data to the vehicle’s onboard computer to show the air and fuel that enters the engine’s cylinder. A car with a bad oxygen sensor will also fail the emissions test.
A Low or Dead Battery
The 2019 Jeep Grand Cherokee has a very basic battery. It lasts longer than earlier batteries and helps start the car, light the road, charge your phone, or play the radio. The check engine may indicate the battery is low or about to die.
A Loose Gas Cap
One of the common causes of a check engine light on your 2019 Jeep Grand Cherokee is a loose, missing, or damaged cap. The gas cap is responsible for preventing the release of gas fumes, sealing the fuel system, and maintaining pressure in the fuel tank.
If your cap is old or faulty, you have low fuel efficiency due to the loss of fuel through evaporation. The good thing is that replacing a gas cap is affordable. If your engine light becomes rapid on adding gas, ensure your cap is still on the vehicle’s roof and that it is not loose.
What Should You Do If the Check Engine Comes On?
When the check engine light comes on, it does not mean you pull over and call a tow truck. Please ensure that you take your 2019 Jeep Grand Cherokee to be checked at the soonest time possible. This is because ignoring it could damage costly components in the engine and buying a remanufactured Jeep engine isn’t necessarily cheap, https://reman-engine.com/remanufactured-engines/jeep.
