Inpa Error 159 !!better!! (2026)

If you are troubleshooting an older BMW (pre-2000) that uses only K-Line (pin 7) and not CAN, and you see Error 159 on all ECUs, the cable may be stuck in CAN mode. Solution:

: In some cases, overly aggressive antivirus or firewall software blocks the local communication between INPA and the EDIABAS server, leading to that dreaded timeout. inpa error 159