Why Is My Check Engine Light On? Easy Fix!

Hi everyone, Paul here, so sometimes a

check

engine

light

symbol like the one here

light

s up on someone's car dashboard and won't go off, so since it doesn't tell you anything, people stay wondering what made it turn on. Well, it's basically telling you that something is wrong with the emissions system it monitors, so let's talk about the most common reasons your

check

engine

light comes on. Keep in mind that a steady light means it's something minor and a flashing light means it's something more serious. The caveat I also want to mention here is that many of these parts eventually need to be replaced because they simply age and wear out;

However, some of these parts will wear out prematurely because routine maintenance is not performed, so here we go to number one. is a faulty gas cap this maintains pressure in the fuel tank and prevents vapors from being released into the air the gas cap could simply be loose, damaged or missing number two is a faulty oxygen sensor this measures the amount of unburned oxygen in your exhaust system and controls the air-fuel mixture going to the engine. Your vehicle may have more than one of these premature failures which may be caused by your engine burning more oil than normal or also by higher concentrations of ethanol in your gasoline.

If you do not replace it, it will reduce gasoline consumption. Rough idling eventually damages spark plugs and catalytic converters. Number three is a faulty air fuel ratio sensor. This measures the air-fuel mixture in the exhaust manifold and controls the air-fuel mixture that leads to engine failure. This part will reduce fuel consumption. In engine power and delayed acceleration response, as well as rough idling and even stalling, number four is a faulty mass air flow sensor. This part measures how much air enters the engine and then determines how much fuel to send to the engine failure. The part may cause a reduction in gasoline consumption.

Engine hesitation during acceleration damages the oxygen sensors. Spark plugs and catalytic converters. Number five is a bad ignition coil. This part sends electrical current to the spark plug. Premature failure of this part can be caused by driving in extremely high temperatures. Wet weather or even driving through a puddle, the failure of this park can cause the engine to fail at idle or reduce power and not being able to start the number six engine is due to faulty spark plug wires. This part sends electrical current from the ignition coil to the Orange spark plug wires will reduce gas mileage, loss of power and acceleration and in severe cases the engine misfires and stalls, it can also cause damage. to oxygen sensors, air-fuel ratio sensors, ignition coils and catalytic converters.

Number seven are defective spark plugs. This part allows the air-fuel mixture to ignite causing engine combustion Worn spark plugs will reduce fuel consumption Loss of power Engine misfires and difficulty starting can also cause damage to the oxygen sensors Fuel ratio sensors air ignition coils and catalytic converters number eight is a faulty thermostat this part regulates engine temperature a faulty water pump, a worn or loose water pump belt or something as simple as a low radiator coolant level could prevent the thermostat from working properly. Premature failure can occur from not changing the radiator coolant. Failure of this part will cause a high temperature gauge reading and overheating of engine number nine is a faulty EGR valve.

This part sends a portion of the exhaust gases back to the engine's combustion chamber to reduce emissions. Premature failure of this part can be caused by not changing the engine oil regularly, which causes carbon buildup and clogs the valve. The good news is that it can often be fixed by simply cleaning it. A faulty EGR valve will result in reduced fuel consumption. gasoline consumption increased emissions engine hesitation at rough idling reduced overall power can even cause serious engine damage number 10 is defective evaporative emission an aster or evap purge valve this part prevents fuel vapor from entering the fuel tank fuel is released into the atmosphere and controls the amount of fuel vapor released from the charcoal canister A faulty valve usually means that it is stuck open or that the vacuum hoses are connected to it or damaged, which can cause a sudden start of the heart. at idle and last number 11, a faulty catalytic converter, this helps convert harmful carbon monoxide into carbon dioxide.

The failure of this part is due to other underlying problems that have not been fixed, the most common being faulty oxygen sensors, mass airflow. sensors spark plugs our spark plug wires of all the items we have covered, this will be the most expensive to repair if you do not replace it your vehicle will have reduced overall engine performance including reduced gas mileage, reduced acceleration and power and can run at higher temperatures, it also won't pass emissions tests, so if your check engine light comes on, the easiest way to determine which part needs replacing is to go to an auto parts store, most Of them will diagnose the problem for free with a handheld computer that can be attached to your car which only takes a couple of minutes, most of these parts are not that difficult to replace and you may be able to do the job yourself. yourself, if you can't do it yourself then you will need to take it to a mechanic so I hope this helps someone if you like this video could you hit the like button below?

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