I Dnt know
Either low coolant level or the engine is overheating.
engine coolant
A flashing temperature light typically indicates that your vehicle's engine is overheating or that there is an issue with the cooling system. This could be caused by low coolant levels, a malfunctioning thermostat, or a faulty water pump. It's crucial to stop the vehicle immediately, allow the engine to cool down, and check the coolant levels. If the light persists after addressing these issues, seek professional assistance to prevent engine damage.
Coolant Level too low (or sensor went bad) or Engine Compartment Temp too high / engine compartment fan failure
flashing blue means you have an electrical issues with the coolant sensor. you probably have a bad sensor that needs replacing in the coolant bottle hope that helps Phil
The flashing heater indicator light on your 2001 Skoda Octavia TDI could indicate a problem with the engine's coolant temperature, often suggesting that the engine is overheating or that there is an issue with the coolant circulation. It may also signal a malfunction in the heating system or a sensor failure. It's important to check the coolant level and condition, and if the light persists, consult a mechanic to diagnose any underlying issues. Ignoring it could lead to more severe engine damage.
Likely a faulty coolant temperature sensor. Change the sensor.
It means the engine may be overheating.
Because the engine is probably too hot.
The engine coolant temperature sensor has nothing to do with the low coolant light. The low coolant sensor is mounted in the bottom of the overflow/filling reservoir by your washer fluid bottle. You will need to verify that the coolant overflow/fill bottle has coolant in it and if it does then the sensor is bad and will have to be replaced.
Switch the ignition off and start the car again.The light will then stop flashing.
When mine flashes it means that the coolant level is low.