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.
Check engine light gas cap loose.
Turn off the engine vehicle.
Ideally it is your personal responsibility to ensure the gas cap is in a tight position as this is the first step of solving the problem.
Gas cap issues can reduce fuel pressure and allow fuel vapors to escape reducing fuel economy and increasing harmful emissions.
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.
An improperly sealing fuel cap may cause an evap system leak which will set off.
Therefore this warning light should be properly diagnosed to pinpoint the exact problem.
If your gas cap is not properly attached you may see a check engine light or a loose cap warning light on the dash.
Pull over tighten it and take a look at the cap to see if it.
If your check engine light is on you cannot pass an emissions test.
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.
Open the gas cap door.
Your gas cap is loose broken or simply missing.
Gas caps and check engine lights gas cap sealing o ring.
The check engine light should go off after you drive for several minutes if the light was caused by 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.
Since the check engine light comes on for many reasons it is best to scan the car for trouble codes.
Below we have highlighted the most common causes of a check engine light.
Pay attention to the dashboard after the check engine light experience.
Gates 31838 fuel tank cap.
Check engine light comes on.
An illuminated check engine light is another symptom of a potential issue with the vehicle s gas cap.
The pump never reaches its desired pressure and therefore triggers the service engine soon light.
The door is usually locked you ll find a push button to unlock it.
The gas cap is a part of the vehicle s evaporative emissions system and can cause problems with the system if it has an issue.
If it s for gas cap failure the fixing will take a mere few minutes.
Open the gas cap door.
Most owners will take their car to a repair shop and have it hooked up to an expensive system that will diagnose the problem.
The most common reason for a check engine light is a loose gas cap.