Hi, I have an Opel Astra G series 1 (1998) with a Siemens Simtec 70 ECU. I am trying to write a C# program using KWP2000 commands and the ELM327 device to read the EEPROM to extract the 4 digit pin code. The commands to start the diagnostic session and seed/key commands work ok, however when I attem...