Incredible My Check Engine Light Came On But Nothing Seems Wrong Ideas. Web if your check engine light comes on but turns off randomly, it’s a sign you have a minor issue that comes and goes and is tripping the system. When an engine misfires, one or more of the cylinders doesn’t produce the power it should.
Web if your check engine light comes on but turns off randomly, it’s a sign you have a minor issue that comes and goes and is tripping the system. If the gas cap isn’t sealed completely, it can set a code because of an evap leak. If there are no other symptoms, your check engine light may indicate a problem with your computer, a loose gas cap, transmission errors, or problems with your o2 sensor.
