Persistent DPF regeneration after timing belt replacement

Volkswagen Golf 7 1.6 TDI DDYA, 175,000 km, mostly highway miles.

Hello everyone.

I replaced the timing belt on my Golf 7 1.6 TDI. I loosened the pulleys of the high-pressure pump and camshaft, rotated them to their respective marks, installed the belt, and then tensioned it. Now, the pulleys are not aligned with their marks, which is how they should be.

I checked the error memory, but there's nothing stored in it.

Only he starts regenerating now, and it doesn't stop even after a long drive.

All the connectors are plugged in, and the hoses of the differential pressure sensor are not kinked or damaged.

Does anyone know what might be causing this?

Sure:
https://community.dieselschrauber.org/en/viewtopic.php?t=29120

That happened right after the timing belt was replaced, so I drove about 125 miles (200 km) and it started happening immediately.