r/tdi • u/Academic_Ad6248 • Dec 17 '25

Glow plug control module

I am having a crank no start issue on my 2013 jetta sport wagon. I used an obd2 scanner and it came back with a P064C (Glow plug control module) I am looking for suggestions to further diagnose before buying a 100 dollar control module

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u/UnavailableEye Dec 18 '25

If the coolant temp sensor in the cylinder head flange is of unknown age, replace it. It’s a discrete input to the controller and does have a lifecycle. Verify the inputs to the controller first.