Check Engine Light Gas Cap Loose

Your gas cap is loose broken or simply missing.

Check engine light gas cap loose.

Gates 31838 fuel tank cap. Most owners will take their car to a repair shop and have it hooked up to an expensive system that will diagnose the problem. Turn off the engine vehicle. The pump never reaches its desired pressure and therefore triggers the service engine soon light.

Pull over tighten it and take a look at the cap to see if it. Open the gas cap door. An improperly sealing fuel cap may cause an evap system leak which will set off. Pay attention to the dashboard after the check engine light experience.

Check engine light comes on. If your gas cap is not properly attached you may see a check engine light or a loose cap warning light on the dash. Since the check engine light comes on for many reasons it is best to scan the car for trouble codes. It is never a good idea simply to assume that the check engine light is on because the gas cap is loose.

The most common reason for a check engine light is a loose gas cap. Below we have highlighted the most common causes of a check engine 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. Gas caps and check engine lights gas cap sealing o ring.

Open the gas cap door. If the rubber seal on the fuel cap isn t sealing because the cap is loose or cross threaded the test fails. 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.

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 illuminated check engine light is another symptom of a potential issue with the vehicle s gas cap. Therefore this warning light should be properly diagnosed to pinpoint the exact problem. If your check engine light is on you cannot pass an emissions test.

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. 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. 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. 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.