Hi, I have a 2017 Peugeot 308 1.2 on 154k.

As soon as I start the car up, the cooling fan will cut in for a few seconds, go off for a few seconds, and repeat this the entire time the engine is running, regardless of engine temperature. The fan cuts in and out the entire time the engine is running.

Also, about 1 in 5 times I switch off the engine, the cooling fan will start up and won't stop. It does this seemingly at random, and engine temperature has no effect on whether or not it does this. However, if I restart the engine and switch it off again, the fan stops. I have to do this approximately 1 in 5 times I switch off the car.

My first thought was the coolant temperature sensor, however the temperature gauge seems to be accurate and rises as you would expect.

I was wondering if anyone has any ideas or experiences of this before I start throwing parts at it!

Thanks in advance!