A4 B5 New throttle body cannot be initialized

Hello.

A4 B5 1.8T, APU:

Yesterday, I replaced the G28 sensor and the throttle body (original Bosch with the correct part number).
Before I tried to pair the device, I wanted to clear the error memory, but I couldn't. Pairing is also not working (ERROR).
Okay, so I'm trying the old one again... same problem... errors can't be deleted, and pairing won't work.

All the cables are securely connected to the plug, and the plug itself looks fine.

Does anyone have any ideas?

VCDS 16.8.1 (with version 16.8.0, it was possible to program the old control unit before the new one was available... but I suppose it's not related to VCDS, right?!)

Hello,

Are you absolutely sure that the "P1558 electrical fault in the circuit" has now been resolved?
I'm actually not very worried, and nothing will be possible until then.

Best regards, Rainer.

Hello Rainer,

We checked the cables at the plug... everything was secure... and we didn't find anything else unusual. The two errors appeared "out of the blue" after the throttle body replacement (4 screws and a connector... there's nothing you can do wrong there).

Funny thing...

Does an actuator test work?

Best regards, Rainer.

Good question... we didn't get to that last night. Unfortunately, the car isn't at my place because it's not drivable in its current condition. But I'll make sure I can get there and take the actuator test.