Inpa Error 159 _verified_ -

Loose OBD-II port connections or faulty USB ports on your laptop.

Ensure the is set to COM1 (unless your OBD.ini specifies otherwise). 2. Verify OBD.ini and Ediabas.ini Configuration inpa error 159

The Windows COM port latency is often set too high (default is usually 16ms), causing the software to "time out" before the car responds. Loose OBD-II port connections or faulty USB ports

Attempting to run INPA while another EDIABAS-based tool (like ToolSet32 or DIS) is active. Step-by-Step Solutions to Fix Error 159 1. Adjust Latency Settings (Most Common Fix) Verify OBD

A mismatch between the COM port assigned in Windows Device Manager and the OBD.ini file.

Expand and right-click your cable (e.g., USB Serial Port ). Select Properties > Port Settings > Advanced . Change the Latency Timer (msec) from 16 down to 1 .

Understanding and Fixing INPA Error 159 (Timeout Error) , often labeled as a Timeout Error or API Initialization Error , is a common communication failure that occurs when the INPA software is unable to establish or maintain a stable connection with the vehicle's Electronic Control Units (ECUs). This error typically indicates that the software sent a request but did not receive a response within the allotted timeframe.