STG Coding: Explained & How-To Guide

Hello,

How can I code the STG (Steuergerät - control unit) in the AHU (engine type) so that the warning light no longer flashes after a certain time (error: incorrect coding)?

Thank you very much in advance

Hello,

What make and model of vehicle (e.g., Golf, Passat...) is this, and what is the model year?
Is it an automatic transmission? What is the error code?

It's a Caddy model year '97 with a manual transmission and without power steering.

Sure, here is the translation of the text from German to English:

'Additional information: Error code 1551 detected.'

Hello,

If it is an MSA 12 control unit (recognizable by the fact that the software version starts with a letter and that there are no leading zeros before the transmission variant SG or AG), it cannot be coded.

For your MSA 15, the value "00002" should be entered.
After programming, be sure to turn the ignition off and on again. Otherwise, the new programming will not be applied.

I actually wanted to know the error code itself, not the error reader's code.