How important is the engine coolant temperature sensor on an 03 VW?

Mine is causing the check engine light to come on but i dont feel like paying for a new oneHow important is the engine coolant temperature sensor on an 03 VW?It is best to replace it.

The engine may be running too rich burning more fuel than is needed.

Coolant temperature is critical for proper fuel economy.How important is the engine coolant temperature sensor on an 03 VW?How would you like to pay for a new VW catalytic converter or exhaust system or other expensive parts???? It is VERY important to change it if it is faulty. It affects fuel mixture, power, shift points. This in turn affects O2 sensors, converters, exhaust system temperatures, and exhaust gaskets and muffler joints (from hightened temperatures) I wish I could impart to you how sophisticated and wonderful the VW product line is. Your car is trying to help you save money, but you are too lazy to do what it is telling you to do. Also, use only genuine VW coolant in this car, unless you like spending even more money! Also, only oil that meets VW/Audi specification 502/505 may be used. READ your owner's manual. Also, have your VW scanned at the VW dealer. They can reprogram your CPU if required with their VAGCOM. If you don't like the price of the temp sensor, use the internet to find a more agreeable price. Try 1-248-373-2300 in Pontiac Michigan. They will mail order you the right part for cheap. Many engines, especially vw's, begin to get ruined by owner's who disregard their OBDII warnings. GET SMART!!!!!!!How important is the engine coolant temperature sensor on an 03 VW?it,s very important. it lets the driver know when it overheats. it,s up to you but if it was me it would be fixed.How important is the engine coolant temperature sensor on an 03 VW?
dumbest thing you can do is not fix it. how do you know if the engine's gonna overheat unless you're physcic