Loose Fuel Tank Filler Cap

If your gas cap is not properly attached you may see a check engine light or a loose cap warning light on the dash.

Loose fuel tank filler cap. Many cars will also generate a warning signal if the on board computer detects any fuel vapor escaping from the gas tank. Loose gas cap struggling to tighten your gas cap is a common sign of a broken gas cap. Check engine light comes on. One common error code that you may encounter is p0440 which indicates a loose gas cap.

Decrease fuel consumption of your vehicle. If the gas cap seal becomes damaged or worn it may cause fuel vapors from the gas tank to leak from the filler neck. What is the cost to diagnose the p0441 code labor. Loose fuel tank filler cap is the most common cause that triggers the p0441 code.

If you realized that your gas cap is faulty or loose it is simple to order a replacement gas cap. 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. If you do not hear a clicking noise despite tightening the cap as usual or if you hear a click but the cap pops back loose you may need to replace your gas cap. Step 1 turn off your vehicle s engine.

However this is not the only code involving the fuel tank that could set off the check engine light. Click on a link below for more information. Tanks inc carries a variety of fuel filler necks and fuel bungs. If the fuel cap has any issues sealing the fuel tank it can cause the check engine light to come on for evaporative emissions system reasons.

The p0441 code means that the control module has detected a leak in the evaporative emission evap. 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. When doing so you must make sure the gas cap is suitable for your vehicle s make and model to ensure a tight fit. Cause roads to be slippery for other motorists.

The vehicle s evaporative emissions system is designed to trap and reuse fuel vapors and can detect if there is a leak in the system. Often gas caps are made so that they will click once to indicate they are tightened. We carry many original applications as well as some universal fuel filler necks and caps. This may result in a gasoline odor from the vehicle as a result of the escaping vapors.