Toyota Tundra Gas Cap Check Engine Light

I have a 2000 tundra and the check engine light comes on as soon as the gas tank is less than half full.

Toyota tundra gas cap check engine light.

A properly sealed gas cap maintains pressure in your fuel tank and prevents harmful fumes from escaping. Evap canister pcv valve evap valve o2 sensors. Since it seals the fuel system and maintains fuel tank pressure it prevents gas fumes from being released into the atmosphere when your vehicle is not in use. Replaced the spark plugs and all of this via the advise of which ever repair shop has diagnosed the problem.

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. The check engine light alerts you to a loose broken or missing gas cap so you can tighten or replace it before you lose too much fuel. What to check when it s not the gas cap. We have a 05 toyota tundra v8 2 wheel drive whos check engine light will no stay off no matter what we fix.

In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light. I had it reset several times but it always comes back on at 1 2 tank. Replaced the 02 sensor on the passenger side catalytic converter twice. A loose or damaged gas cap.

A check engine light can indicate a broad spectrum of problems with your 2008 toyota tundra. Toyota check engine or service engine soon light may come on due to something as simple as a loose gas cap but it can also be an indication of a number of other issues including bad spark plugs faulty oxygen sensor dirty mass airflow sensor and even an early indication of a transmission problem. We replaced the ecm computer with a refurbished one. In this guide you will learn about common problems that trigger toyota check engine light and.

I ve replaced the gas cap and always make sure it is tight. If the check engine light goes on in your 2016 toyota camry be sure to check your o2 sensor. I can not find a leak and the truck runs great.