Engine light comes on and off - Polo Volkswagen Cars & Trucks

Hi Jonna.
not sure if this will help you out,but its what i have found on the internet.

Your car's "Check Engine" or "Service Engine Soon" light can flash on for more than 1,400 different reasons, and in the coming months, we're going to share with you what some of those reasons are. The light is part of your vehicle's on-board diagnostics (OBD) system and can indicate anything from a quick fix like a loose gas cap to a major repair like a catalytic converter.
Trouble code: P0217 Engine Over Temperature
If this code is discovered, it means the engine coolant temperature is excessively high under normal engine speed. The engine coolant is overheating if it's around 240 to 250 degrees. This is a critical light! It means your engine is beginning to overheat.
In addition to the check engine light, you might also see some other type of warning on the dashboard, such as a red temperature gauge or maybe the words "engine hot."
The warning lights should come on before any damage to your engine occurs, but you need to shut the engine off as soon as possible.
or check this link out.

Does the engine light come on if the car is overheating Google Search

You need to get the computer trouble codes scanned
Check engine light on Part Ricks Free Auto Repair Advice

No, the problem lies elsewhere.
Get a diagnostic check done to identify the fault

My Engine Check Light Is Illuminated

The check engine light should not come on at all. If it does than you need to put it on a code checker, to find out the reason for the check engine light coming on. The light is known as the malfunction indicator light (MIL). When it comes on it indicates a malfunction in the system.

If the ABS warning light comes on the engine light should not come on as well. ABS light shows there is something wrong with the brakes. The engine light shows that there is something wrong with the engine.

Check engine light comes on constantly nothing seems wrong or Check engine light keeps coming on and something is draining the battery..Which is it ?

Check engine light comes on and off, these are indication that there is some error code stored in your vehicles ECM. The engine module computer needs to be scanned. These will give the code and as per the error code the further problem can be detected and confirmed. The engine light indicator blinks or remains steady on dash when engine computer noticed any problem with any engine electrically operated components.

For more help, I suggest you to refer the help links provided below. These will let you know more about which areas to look, check, when there is engine light coming up on dash panel.

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Click the link below: -------

CHECK ENGINE LIGHT

http://alltypesofpartsreplacing.blogspot.com/2012/12/check-engine-lightengine-warning-light.html

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Check Engine Light Reset Procedure?
http://whoisbyme.blogspot.in/2012/06/check-engine-light-reset-procedure.html
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These will help.
Thanks.

If the check engine light comes on, then codes are stored. Get the codes read. Don't ask us to guess what codes are stored

Any time the check engine light comes on the traction control will be disabled and the light will also come on. Start with scanning the engine computer for trouble codes to see why the check engine light is on.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

could be your water temperature sensor