P188900 error code

S3lover

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I was wondering if anyone has come across this code before P188900- coolant shut -off valve -N82 short circuit to Ground/open circuit. I get no engine lights on the dash and care drives how it should.
The code was stored from January this year.
When the car went in for a service my mechanic said it bought up the above code.

Audi S3 8V - 2017 plate

Do i just leave it as it as on the basis car drives fine or can someone with some mechanical experience advise me what i should do?

Any help would be appreciated.

Thank you in advance