Hi,
That is correct. The two are combined.
The problem is likely in the wiring. Clear the code and try a wiggle test to see if the code resets right away.
Other than that, you need to perform the diagnostics located below. It requires specific VAG tooling to complete. If you look at pic 1 below, it lists the things needed.
Let me know if this helps.
Take care,
Joe
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Tuesday, May 4th, 2021 AT 6:51 PM