Has anyone ever experienced this? Error code 00529...

I have an Audi A6, model year 1998, sedan, 2.4L engine (engine code AGA), 121 kW, automatic transmission (transmission code 01V).
Here's the translation:

"The following problem occurs: after driving a short distance, the oil warning light illuminates on the multi-function display (MFA). Simultaneously, the ABS light comes on. When shifting gears, whether into reverse (R) or drive (D), there's a significant jolt."
Error memory kmp checked. Only in the GSTG (likely referring to a specific system or module), an error with code 00529: "Speed information missing, short circuit to positive (intermittent)."
The error is temperature-independent, and it is still possible to drive the vehicle after the jolt.

"There's obviously enough oil in there, and according to the GFS (Ground Fault System), there's no short circuit in the line."

I believe error code 00529 refers to the G28 (engine speed sensor), but if it's defective, the car shouldn't start at all. And what does this error have to do with the ABS or the oil light?

Best regards, Gerd.

Are there any more errors saved?

http://wiki.ross-tech.com/index.php/00529

Otherwise, no errors are saved.

Is there a German version of this website?

No, those terms don't exist in German, but essentially they mean the same thing as checking the wiring and measurement blocks. If the error occurs sporadically, it's naturally difficult to diagnose, but in that case, the problem is likely either the sensor or the wiring.

What I would do is potentially swap the sensor with another one and check/verschandeln the connectors.

"Today I replaced the G28 sensor (which measures engine speed), and lo and behold, the jerking and the overly harsh shifting of the transmission are gone, and there are no more error codes in the transmission control unit."

However, I am no longer able to access the following control units (STGs) since the recent software update: MSTG, ABS STG, and Airbag STG.
And the ABS warning light and the oil pressure warning light are still on. There's nothing you can do wrong when changing the G28.

I'm sure I'll find the error, the question is when.

Error found!!
After checking all the ECUs (Engine Control Units) in the powertrain (specifically ECUs 15, 30, and 31) and finding no errors, I disconnected each ECU one by one to see if I could then access the others or not.
When I disconnected the ABS control module, I had access to all the other modules, which means the ABS control module is defective.

Best regards, Gerd