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How To Reset the Gas Cap on Jeep Patriot? (Explained)

The gas cap, often known as the gasoline filler cap, is a common component on most cars and trucks. Their function is to keep dirt, debris, and dust out of the gas tank while creating a reliable seal.

When the gas cap is loose or not correctly fastened, the gas tank’s pressure is disrupted. On-board diagnostics (OBD) systems, like the one in your car, are able to detect changes in pressure that could signal a leak in the emissions system, so the warning light is activated.

Also, if the cap is removed regularly to add fuel, it can wear out and need to be replaced.

In this post, I’ll discuss the Jeep Patriot’s gas cap difficulties and how to reset it.

What’s The Gas Cap Code?

What does the OBD-II trouble code P0457 mean? The code P0457 indicates that a fuel cap leak has been detected.

These anti-evaporative emissions (EVAP) device prevents hydrocarbons from escaping into the atmosphere.

How Can You Tell If Your Gas Cap Is Bad? (Symptoms)

Check engine light on dashboard, fuel smell coming from car, trouble with gas cap removal or tightening are all signs of bad gas cap. Water getting into the fuel tank is also a sign of bad gas cap.

Let’s learn about the common symptoms of this issue-

The Bottle’s Cap Doesn’t Fit Tightly

One of the most prevalent signs of a problem with the gas cap is a loose gas cap. When gas caps are properly tightened, you’ll hear a click.

Replacement is necessary if the cap doesn’t click, or if it clicks and then pops loose once more.

The Car’s Fuel Scent

A defective fuel cap might potentially be causing the car to exude a foul odor of gas.

Fuel vapors might escape from the filler neck if the gas cap seal is cracked or worn. If the vapors escape, the car may emit a gaseous scent. This is a potential problem.

Check Engine Light Is Illuminated

Another sign of a problem with the vehicle’s gas cap is an illuminated “Check Engine Light.” An issue with the vehicle’s evaporative emissions system, which includes the gas cap, could lead to a malfunction.

An EVAP system leak might cause the Check Engine Light to come on if the fuel cap isn’t properly sealed.

Checking the computer for trouble codes is very important because the Check Engine Light can be caused by a lot of different things.

The Check Engine Light may come on, preventing the vehicle from passing an emissions test if the fuel cap is damaged or fails. This will not necessarily result in significant performance concerns.

How to Reset the Warning Light Gas Cap?

The following are the steps to follow in order to reset the warning light on the gas cap-

Step 1: Deactivate the engine of your vehicle. If your car has a locking gas cap door, press the button to unlock it. That’s where you can find it. It’s either under or next to the driver’s seat.

Step 2: Proceed to the gas door. Go ahead and let yourself in. Unscrew the gas cap by twisting the handle counterclockwise. Take it out.

Step 3: Reinstall the gas cap. In the event that the thread seals weren’t working properly before, it can be fixed by removing and replacing it. To tighten the gas cap, turn it clockwise. When you hear three clicks, stop turning the wheel. Make sure it’s sitting in the correct position by doing this.

Step 4: Lock the gas cap door. Go back to your cabin. Take your car out for a spin for a full day. The “Loose Cap” or “Check Engine” light will be automatically reset by the OBD-II system.

Step 5: If the warning light does not go out, use an OBD-II code scanner. Connect to the OBD-II port under the steering column. In appearance, it resembles the port of a computer printer. To clear the system, press the “Reset” button on the code scanner.

Take the wheel of the automobile and keep on going. Make sure the dashboard warning lights don’t come back on by paying attention to them.

How to Avoid the Message of the Gas Cap?

You may prevent receiving the messages by doing the following:

  • After you’ve refueled, make sure the gas cap is in its proper location.
  • Listen for a click when you close the gas cap.
  • Your gas cap’s vacuum seal can be compromised if dirt and grime accumulate around it.
  • When refueling, make sure the gas pump is in the proper position.
  • To ensure that the gas cap doesn’t fall off, always close the gas cap door.

Gas Cap Replacement: How Often Is It Necessary?

The gas cap features a seal to keep garbage out and screws into the top of the filler neck. Because the gas cap is constantly being utilized, it will ultimately need to be replaced. As long as the gas cap is properly cared for, it can last up to 50,000 kilometers.

Can I Drive with a Gas Cap Warning Message On? 

When the light comes on, you should immediately check the gas cap.

If the gas chamber’s cap is missing or loose, the driver and other passengers could be in great danger.

When a gas cap is damaged, the engine’s performance will be affected and your cabin may potentially have a gas smell.

While you may not be in immediate danger, the damage they inflict on your engine and respiratory system can accumulate over time.

Selecting the Best Gas Cap for Your Jeep

It isn’t necessary to wait for your gas cap to fail before you replace it; you can do so now.

You can take your car to a professional if you feel that your gas cap is faulty. A smoke machine is used to see if there is a risk of leakage if the gas cap has any cracks or holes.

It is critical that the gas cap fits properly. Make sure the gas tank spout can close tightly around the cap before using it. If the light turns off after you put the cap on, you’ve got the appropriate gas cap.

Alternatively, you may want to purchase a locking gas cap. For those who can only open the Jeep’s fuel filler door from within, a locking gas cap is not necessary.

Most Jeeps have a gas cap door that can be opened with a simple slip of the fingers.

When you open the trunk on some more recent models, you may even be able to open the gas cap.

Installing a locking gas cap is a good idea if you reside in an area where thieves regularly steal fuel from parked automobiles.

Gas caps come in a variety of colors, including green, yellow, and even black.

The fact that most gas caps are black suggests that the engine is designed to run on fuel with less than 10% ethanol.

If your gas cap is green, you have a diesel engine, and if it is yellow, you have a gas that contains 15% to 85% ethanol.

If you plan on selling your Jeep and someone needs to know what sort of gas to use, it’s a good idea to replace the cap with one of the same colors.


Jeeps are well-known. They have been the leading off-road vehicle since their military days.

Jeeps are still looked upon. The Jeep’s rugged exterior is by design. Jeeps are capable off-road and tow vehicles. Off-road or in snow and ice, a Jeep is the vehicle of choice.

A loose gas cap isn’t a big deal for a car that’s known for being reliable. If this happens to your Jeep, get it checked out as soon as possible.

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