Login Code: Generate & Verify Secure Access

Hello everyone.
I'm having the following problem: Passat 3B, engine code AHU.
I wanted to lower the idle speed a bit (currently 970 RPM). Login code: 12233.
Unfortunately, it doesn't work. The control unit is blocked for about 3 minutes because of an incorrect code.
"Translate the following text from German to English. Provide ONLY the translation, no explanations."

"Do the same with 26262."
Is there another option?

What is the part number for the MSTG?
Which diagnostic adapter or tool?
Possibly - which VAG-COM / VCDS version?

Best regards, Micha.

Hi Micha,

Control unit.
Part number: 038 906 018 N
Component: 1.9L R4 EDC, part number 00AG 1615.

VCDS version: DRV 805.1
Data as of: 20081010.

Normally, no login is required to change the idle speed.

If the vehicle has the original data set, the login is 12233!

Best regards, Micha.

According to the previous owner (first owner), nothing unusual has been done to the car (I know him quite well), but unfortunately, 12233 is not possible.

You could try checking if the logins for GRA activation (11463) and...
Deactivation (16167) works (disable after login, then enable).
(to control). If they leave, the number 12233 was changed, which only applies to that specific unit.
This is achieved by soldering in modified memory modules.

Best regards, Micha.

I'll try to do it. However, I won't be able to get to it until next week, as the car is currently being driven. I'll let you know how it looks then.
Thank you for your efforts.