If you find that the light keeps coming on and goes off again once you tighten the gas cap then your gas cap is too loose.
Check engine light gas cap loose.
Since the check engine light comes on for many reasons it is best to scan the car for trouble codes.
Gas cap issues can reduce fuel pressure and allow fuel vapors to escape reducing fuel economy and increasing harmful emissions.
Pull over tighten it and take a look at the cap to see if it.
An illuminated check engine light is another symptom of a potential issue with the vehicle s gas cap.
It is never a good idea simply to assume that the check engine light is on because the gas cap is loose.
Therefore this warning light should be properly diagnosed to pinpoint the exact problem.
Below we have highlighted the most common causes of a check engine light.
The most common reason for a check engine light is a loose gas cap.
If the rubber seal on the fuel cap isn t sealing because the cap is loose or cross threaded the test fails.
Open the gas cap door.
Pay attention to the dashboard after the check engine light experience.
The check engine light should go off after you drive for several minutes if the light was caused by a loose gas cap.
The door is usually locked you ll find a push button to unlock it.
Turn off the engine vehicle.
The pump never reaches its desired pressure and therefore triggers the service engine soon light.
If your car isn t feeling jerky or strange when the check engine light comes on the first thing you should check is the gas cap.
Once you ve noticed the check engine flashing don t worry.
Most owners will take their car to a repair shop and have it hooked up to an expensive system that will diagnose the problem.
Open the gas cap door.
Your gas cap is loose broken or simply missing.
If your gas cap is not properly attached you may see a check engine light or a loose cap warning light on the dash.
If your check engine light is on you cannot pass an emissions test.
When your gas cap is faulty chances are there will be evaporation of the fuel that will eventually interfere with the normal functioning of the check engine light.
Gates 31838 fuel tank cap.
Gas caps and check engine lights gas cap sealing o ring.
You can either tighten the cap and wait for the system to reset itself when it determines the problem is fixed or you can use an obd ii code scanner to manually reset the system.
An improperly sealing fuel cap may cause an evap system leak which will set off.
If it s for gas cap failure the fixing will take a mere few minutes.