It is on because u did not put the cap back on tight enough.
The 2004 Toyota Avalon has a V6 engine.
The 2004 Toyota Avalon has a 3.0 L base engine size.
The 2004 Toyota Avalon's engine produces 210 hp @ 5800 rpm.
The 2004 Toyota Avalon's engine produces 220 ft-lbs. @ 4400 rpm.
The check engine light in a 2004 Toyota Tacoma can come on for many reasons. It could indicate an exhaust leak or a problem with the engine.
Here a answer maybe CHECK THE ENGINE:) the light will go off
A flashing check engine light is an indication of a misfire.
Reset the Check Engine Light by disconnecting the battery for about 10 minutes.
The check engine light has nothing to do with an oil change. The check engine light is reset with a scan tool after repairing the failure that caused it.
It is a little yellow engine.
might need to check your engine soon
If the check engine light is flashing that indicates an engine cylinder misfire has been detected