Foxflash failed to read VW Passat B6 Siemens PPD1 ECU via OBD?
Possible solutions:
1). I had this before, in my case the starter motor was unplugged (I don’t know if that’s relevant to the problem) we tried a few things, including disconnecting the battery for 10 mins, and plugged in the starter of course, and it worked again via OBD. also check for any DTC and clear any
2).
Leave the ignition on for 30min and let it read. Or Start engine at minimum RPM for 30 min and change camshafts.
Tested by many. It works.
3). Use MPPS V21 or KESS for this ECU. or Flex in 1 minute.
4).
Or try with ktag or foxflash on boot mode this ecu is easy to open.
FYI:
bench node not supported ecu ppd 1.