Inpa Error 159 Best Guide

Deep dive: INPA error 159

Check OBD.ini

(in same folder)

A Real-World Example

Software and Driver Mismatch

Critical:

Do not add spaces after the COM port number. inpa error 159

Incorrect COM Port Configuration:

A mismatch between the COM port assigned in Windows Device Manager and the OBD.ini file. Deep dive: INPA error 159 Check OBD

• The selected ECU is not present or not functional.
• Ignition is OFF (ECUs require ignition ON for most diagnostics).
• Battery voltage too low (<12V) causing unstable ECU communication.