Inpa Error — 159

Selecting the wrong chassis (e.g., choosing E36 when your car is an E46) or attempting to access a control unit that doesn’t exist in your vehicle can produce error messages that resemble or lead to Error 159. The software expects a specific communication protocol that the selected module does not support.

Tool32 (found in C:\EDIABAS\BIN ) bypasses INPA’s job scheduler. Open Tool32, load the appropriate .PRG file (e.g., MSV70.PRG for E90 325i). Run a simple job like FS_LESEN (read status). If Tool32 returns valid data but INPA returns Error 159, your INPA installation has corrupt .IPO or *.ENG files.

Some vehicles, especially E90/E92 LCI models, require specific K-Line or D-CAN speeds to be set manually.

: The most frequent culprit. Your COM port latency must be set to 1ms . inpa error 159

Right-click your USB Serial Port (usually named FTDI) and select . Go to the Port Settings tab and click Advanced .

The following factors are the most frequent triggers for Error 159, ranging from hardware physical connection issues to software configuration conflicts. 1. Hardware Connection Issues

Complete the installation and repeat Step 1 (as Windows often resets the latency timer back to 16ms during a driver update). Prevention Tips for Future Diagnostic Sessions Selecting the wrong chassis (e

Users of DIS (BMW’s Dealer Diagnosis System) or GT1 diagnostic heads may encounter a related error: .

Does the error pop up , or only when accessing a specific module ?

This comprehensive guide will break down exactly what Error 159 means, why it happens, and the step-by-step solutions required to fix it and get your diagnostics back on track. Understanding INPA Error 159 Open Tool32, load the appropriate

Click to save adjustments. Lowering these ensures that data packets are processed immediately rather than waiting to fill a large buffer queue. Step 3: Verify the EDIABAS.ini File

Choose and select the folder containing the downloaded FTDI drivers.

Under , find the variable named Path and click Edit . Check if C:\EDIABAS\BIN is listed. If it is missing, click New and add C:\EDIABAS\BIN . Click OK on all windows to save the changes. Prevention Tips for a Stable INPA Setup

If the Receive and Transmit buffers in Windows are set too high, data chunks are delayed, triggering a clear-buffer fault.