Question: Foxflash Read and Write Opel PSG16 by obd or directly on the pump?
If zafira a, astra g – then direct to pump. Vectra c, astra h, signum – obd.
You can also read and write PSG16 via OBD on bench with the godiag breakout box.
Opel PSG16 pinout
For example Opel Astra PSG16 read and write with foxflash
Write OK, checksum OK