Skip the auto shop - Our mechanics make house calls

Is It Safe to Drive With the Gas Cap Light On?

You have what sometimes seems like innumerable warning lights in your vehicle. Some of them alert you to very serious problems. Others, not so much. Some lights simply provide information, and your Gas Cap Light is one of those. When this light comes on, all you need to know that your gas cap is not present. Perhaps you have forgotten to screw it back on after fueling up, and you can consider this a helpful reminder that you should probably exit your vehicle and retrieve it off your trunk lid, or wherever else you might have left it.

So yes, you can drive safely with your Gas Cap Light on. Now, of course, you are wondering if you can drive safely without your gas cap. The short answer is yes. If you can drive with the Gas Cap Light on, you can drive without the gas cap. But what you need to know is:

  • Driving without your gas cap will not harm your engine.

  • Driving without your gas cap will not cause you to lose fuel. There is a flapper valve built into your car, and it will stop fuel from flowing out of your tank. The only danger here is if you were careless enough to lean over the fuel intake and provide an ignition source like a lit cigarette that could cause the escaping fumes to ignite.

  • Driving without your gas cap will not deliver harmful fumes into your passenger cabin.

The only real issue here is not safety-related – it is simply that until you replace your missing gas cap, you are going to have to live with a lit-up Gas Cap Light. Once you replace the gas cap, the light should go out. Sometimes, however, the system needs time to reset, so you may need to drive for a while before the light finally goes out. If it has not gone out within, say, a hundred miles, there could be other problems, and you should visit a mechanic to have your system scanned and the problem corrected. At YourMechanic, we can replace your gas cap for you, and also diagnose any problems that may be resulting in your Gas Cap Light remaining on even after the cap has been replaced.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0222 OBD-II Trouble Code: Throttle/Pedal Position Switch/Sensor B Circuit Low Input
P0222 code definition Throttle/Pedal Position Switch/Sensor B Circuit Low Input What the P0222 code means The manufacturer specifies a range of acceptable voltage to be produced from the throttle position...
How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...


Related questions

Q: How do I erase the personal entry codes?

All the personal entry codes can be erased quickly, by following these steps: 1. Enter the factory set entry code, which is located on the owner’s wallet card. 2. Within five seconds, press and release the 1-2 button. 3. Within...

Q: Above you give information for correction on the fuel cap, but where is the "next" button?

Hi there. The message is on for the fuel system is not able to build up pressure. Check the fuel cap seal and see if the seal is cracked or broken. A broken seal on the fuel cap will cause...

Q: Dashboard lights went out on my 2012 Nissan Armada

Hello. To start, do the gauges on the dashboard still function? If so then the issue is relating only to the lights. An issue with the lights can include the bulb, the fuse, or the power supply. The fuse may...