That being said there can be several reasons behind check engine light due to the gas cap failure.
Can moisture cause check engine light to come on.
It makes sure no fuel vapor emits from the fuel chamber and pollute the air.
Then when you least expect it it ll go off in the middle of the night because a leaf from.
Obviously the engine compartment must have gotten really wet.
In general five common malfunctions can cause the check engine light to come on and some of them are simple to fix yourself.
If they look shabby you should replace them.
Either way if the issue is a loose gas cap even after fixing it you may need to drive for about 50 to 100 miles 80 to 160 km before the check engine light resets.
If you haven t tightened the gas cap properly or many times cross thread the cap this can allow air or moisture into the system which sets off the sensor.
Turn off the car retighten the gas cap wait a few seconds and start the car again.
Once again this can cause the check engine light to come on.
All that you need to check your own light is an obd ii reader which can pull codes that help you find out what s wrong with your car if you don t have a code reader keep reading to learn the most common causes and then bring your car to your local autozone to find out why your check engine light is on.
In fact according to many professional mechanics a warning light can be caused by a minor electrical glitch.
However there doesn t seem to be any ill effects.
Some vehicles have a check fuel cap warning or a service engine soon light that may come on for the same reason.
Goranh it may sound obvious but a loose faulty gas cap can actually set the check engine light on.
Some vehicle models including the honda cr v have a separate fuel cap warning indicator on the dash.
Still anytime a cel illuminates on your dashboard it is something that should be taken seriously.
Let s take a look at the most common issues.
Often tightening the cap is enough but the fuel cap might need to be replaced if the seal is broken.
There s a good chance the check engine light will disappear promptly or after a short period of time.
Additionally the gas cap is the part of your vehicle s evaporative emission system.
This electricity was supposed to be going to a spark plug and since it didn t the engine will misfire slightly meaning one of the spark plugs didn t spark enough.
With your engine off check your spark plug wires for tiny cracks or holes especially around the ends of the wires.
While it s often assumed that the check engine light cel is an indication of a major mechanical issue this isn t always the case.
It can drain the battery trigger the check engine light or even prevent the vehicle from starting.
