Check Engine Light Comes On After Filling Gas Tank

Check Engine Light Comes On After Filling Gas Tank. Modern cars (mostly those built in the ’90s and beyond) have a complex system that collects fuel vapors and prevents them from being released into the atmosphere. If the light does not come back on, then you may not have damaged anything by overfilling the fuel tank.

Why is the Car Check Engine Light Flashing? Lighting from lightingproviders.net

Overfilling the tank can spill fuel into into tiny vacuum lines and filters, which in turn can clog emission devices (like the “evap canister”. My 2008 smart has developed an annoying trait. Many thanks for your answers.

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Tighten or replace the cap. I guess gas is not the recommend octane level, that’s why i use some additive from gas station to compensate.

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Turn off the ignition switch before opening the fuel tank cap. The manual does say that a few driving trips with the cap properly installed should make the light go out.

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It sounds like the fuel sending unit might be bad. Typically if a check engine light comes on after filling the fuel tank, it’s due to a vapor pressure problem.

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Then, after about 24 hours the light will just shut off. Next time “check engine light” comes, i’ll have mech read codes.

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Asked by visitor in aberdeen, sd on february 02, 2022. The manual says that it would tank at least one full tank of different gas to turn the light off.

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If your check engine light came on shortly during or after filling the tank, and then goes off later, thats quite a relief. A p0420 code indicates a malfuction in your catalytic converter efficiency test due to a failing catalytic converter.

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Nothing seems to affected and the car drives the same whether the light is on or off. My 2008 smart has developed an annoying trait.

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I only have 14,000 miles and have kept up with the maintenance. The job of the gas cap is to make sure of that.

It Really Happens, And Lucky For You Dont Have To Bring Your Vehicle To A Shop If The Light Persisted.

After it runs out a gallon or so the check engine light goes off. It could be a loose gas cap, a gasket gone bad on said gas cap, or a damaged vacuum hose, among others. It also says that bad gas is one possible reason this light might come on.

The First Time It Happened, The Dealer Said To Make Sure The Gas Cap Was Tight And Drive It For A Day.

This often is triggered by one of the evap system components. If the gas cap isn't properly secured, the system isn't sealed: If your check engine light came on within a day or two after filling your tank, check your gas cap, the experts at aa1car advise.

It Sounds Like The Fuel Sending Unit Might Be Bad.

An older or incorrect fuel cap can cause this issue. Most of these could be something you're doing. Try using a bottle of fuel injector cleaner like techron on your next fill.

I Guess Gas Is Not The Recommend Octane Level, That’s Why I Use Some Additive From Gas Station To Compensate.

Modern cars (mostly those built in the ’90s and beyond) have a complex system that collects fuel vapors and prevents them from being released into the atmosphere. This warning light can indicate a wide range of problems, some minor and others much more serious; Almost every car owner that has ever filled up a gas tank has encountered a “check engine” light that comes on when the gas cap has not been closed properly.

If I Fill The Gas Tank All The Way The Check Engine Light Goes On.

My fuel mileage has also gotten terrible. Is it ok to drive for a while as i am currently out. The manual does say that a few driving trips with the cap properly installed should make the light go out.