Master Guide: Resolving BMW INPA Error 159 (EDIABAS NET-0009: TIMEOUT)
Follow these troubleshooting steps in order to resolve the error. 1. Correct the Windows COM Port and Latency
The error usually translates to: or "Internal Control Unit Fault." inpa error 159
While frustrating, Error 159 is almost always resolvable through systematic troubleshooting. With patience and attention to detail, you can restore full diagnostic functionality to INPA and continue working on your BMW with confidence.
By default, Windows sets USB serial ports to a latency of 16 milliseconds. INPA requires a latency of to maintain a stable connection with BMW modules. Plug your K+DCAN cable into your laptop's USB port. Master Guide: Resolving BMW INPA Error 159 (EDIABAS
Check the global EDIABAS configuration file to ensure the software knows it is talking to a USB cable rather than an old serial network head. In C:\EDIABAS\BIN\ , find and open ediabas.ini with Notepad. Search for the keyword Interface .
INPA expects your OBD cable to be on a specific virtual COM port (usually COM1). If Windows assigns a different port, communication fails. With patience and attention to detail, you can
Follow these troubleshooting steps in order. Most users find that step one or step two resolves the issue completely. Step 1: Change the USB Latency Timer (Most Common Fix)
Look for under the Advanced Settings. Windows defaults this to 16. Change the Latency Timer value to 1 .
: Go to Device Manager > Ports (COM & LPT) > Right-click your USB Serial Port > Properties > Port Settings > Advanced. Change "Latency Timer (msec)" to 1 .
If you are looking to "come up with a feature" inspired by this error—perhaps for a diagnostic tool or a tech-themed project—here are a few concepts based on why this error occurs: 1. "Auto-Bridge" Smart Cable