159 - Inpa Error

For INPA to communicate reliably, the USB-to-Serial latency must be set to 1ms. Open on your PC.

Your software must be "looking" at the same port your cable is plugged into. DIS - Fault 200 159 - Bimmerforums - The Ultimate BMW Forum inpa error 159

Some vehicles, especially E90/E92 LCI models, require specific K-Line or D-CAN speeds to be set manually. For INPA to communicate reliably, the USB-to-Serial latency

Loose OBD-II port connections or faulty USB ports on your laptop. DIS - Fault 200 159 - Bimmerforums -

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

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)

Whether you are using a standard K+DCAN cable or an advanced interface like VXDIAG, resolving this error usually requires checking hardware connections, driver settings, and software configuration. Common Causes of Error 159