Thought it was oil light on my car because it was low, but turns out that's the temperature light, checked coolant, checked oil cap for head gasket, luckily cleaned around rocker cover /head abit yesterday so I'd seem seeping oil.

All fine; light still came on, so I saw on here to scrape the prongs in the coolant bottle with a flat bladed' couldn't find one so used a normal knife lol, and seems to have either solved it and got rid of the ,in my eyes, no existed corrosion but I tried it anyway in case it was very fine corrosion, with it being a sensor, and it seems to have worked, either that or iv ****ed the sensor lol.

Keep updated as can see this being a popular problem for everyone st somepoint

Worth noting also, my cars not the smoothest when first started cold, and it smokes a little clearish white on a cold first thing morning like today.

Went for a drive to get up to 90 temp' coolant seems fine, drives fine, no erratic smoking.

One thing is that it's only happened since it was low on oil, but not low enough for the oil light to come on? And I have noticed the engine fan been on a lot more? And the smell of oil wafting around sometimes, I have an oily engine so when it's hot that won't help at all.

But the fan thing is a curious thing, of being on quite a lot. But I'm going to let it warm back up to 90, check the fluids, smoke, how its idling, and then go for a boot and see if temps ok and coolant still. If all's fine, that's all I can see to do.

Id probably change the coolant temp sensor.