Inpa Error 159 «1080p»

The USB-to-serial driver (K+DCAN cable) is not set to COM1.

The prefix stands for Interface Handler . When INPA throws this specific error, it means the Ediabas server (the background engine driving INPA) sent a command to a vehicle control module, but that module failed to respond within the expected timeout window. inpa error 159

While still inside the Advanced Settings for your COM port (from Step 1), optimize how Windows handles the data stream: Ensure that is checked. The USB-to-serial driver (K+DCAN cable) is not set to COM1

If it says a different number, change it to match the COM port you set in the Device Manager (Step 1). you should be able to:

The cable is not handling K-Line (older) or D-CAN (newer) signals properly.

After fixing Error 159, you should be able to: