Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. Is It Safe to Drive With the Gas Cap Light On?

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

What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P0291OBD-II Trouble Code: Cylinder 11 Injector Circuit Low
P0291 code definition When your vehicle’s PCM registers the P0291 code, it means that a voltage reading came from the fuel injector circuit – for cylinder number 11’s fuel injector –...


Related questions

Q: Can I transport passengers in the cargo area?

Passengers should never, under any circumstances, be in the cargo area of your car when the vehicle is in motion. The cargo area does not have sufficient safety features for passengers, and it is an illegal place for a passenger...

Q: Bike switches off while driving

Depending on the type of fuel valve you have you should remove the fuel valve from the fuel tank to clean or replace the tank filter screen mounted on the fuel control valve. The filter is most likely clogged with...

Q: Brake light on with cruise control kicking off

Hi there. Most of the time this is caused by a bad brake switch. When the switch does not work the computer cannot tell when you apply the brakes, which will affect the braking and cruise control systems. It may...