02 Sensor heating circuit bank 1 sensor 1 on Opel Corsa?

Hello, I've been having a problem for a while now where the check engine light on my Opel Corsa (2008) keeps coming on. The reading shows "O2 Sensor Heating Circuit Bank 1 Sensor 1", but it keeps clearing itself. It's a kind of sporadic error. The sporadic flashing of the check engine light annoys me…

Is the car's indicator light on even though all the lights are working?

In my Golf Mk6, there's a 50 percent chance that the yellow warning light will come on when I start the car. I don't understand why. It only comes on sometimes, and when the light is on and you check the lights, all the lights come on. Every single one! I can't figure out what's…