Peugeot 206 Cooling fan always on.. ?

Change speedometer assembly. Best to scan with scanner first.

Make sure the coolant level is correct. If it is, could be a bad water pump or a clogged radiator. Check the radiator to see if it looks like the inside has a lot of scale and deposits. Remove some coolant if necessary. If the radiator looks relatively clean , could be a bad pump.

See if that gem as a sending unit should be right next to the thermostat standing up like a sore thumb change it and see what happens have a good day thanks

The cooling fan on the peugeot 206 is situated between the front grille and ththe radiator, To gail access to the fan you first need to remove the 4 push/pin fixings that hold the upper grille panel ,then remove the 2 torx screws from either end of the upper panel (one at each end. Next the lower grille panel needs to be removed by disengaging each end from just below the headlights, these ends are held in place by clips ,and care must be taken when pulling the lower grill from these clips.Once you have both upper and liwer grille removed ,it a simple matter of unplugging the fan connector ,and removing the 3 fixing bolts , the fan can then be removed ,

firstly you need to check the coolant level and make sure there are no air bubbles in the cooling circuit
secondly the thermostat could be damaged and stays in the closed position
thirdly the cooling radiator could be clogged and it must be flushed or replaced
you have to take into accont that it could be a faulty message sent by faulty temperature sensor or bad connector of the senser
so you need to open the hood and decide, is the engine very hot or is it normal but still the fan is on

check for good battery if good then replace starter should be okay then .

if you mean the one thay controls the cooling fan then there is 2 of them located at the front of the car next to the cooling fan. these are probably behind a cover and are green in colour and have 5 pins and the wiring usually corrodes where it goes in to the plugs

if this was any help let me know
cheers
mike

Its almost certainly the thermostat.

Try the cooling fan switch, it looks like a large brass nut with wires on it on the thermostat housing or radiator.
To test, pull off the wires and connect together, turn on ignition and the fans should cut in.
If they don't it could be the relay, fuse or broken wire.
The switch is easy to replace, unscrew and rescrew in the new one. Connect the wires, not important which way the wires go, and refill coolant.

Found a blown 5A fuse in the fusebox under the right side of the steering wheel (near driver-side door). Replaced this, and all symptoms appear to have gone... question is, what caused the fuse to blow in the first place?