Inpa Error 159 |work| <Certified – 2024>

A poor-quality K+DCAN cable, a loose OBD2 port connection, or a car battery dropping below 12V during testing. 2. Step-by-Step Solutions to Fix Error 159

Some ECUs will not communicate unless the car key is turned to position 2 (ON) or the engine is running.

) or the "Latency Timer" in your device manager isn't set to Software Interference

If files are missing, consider reinstalling BMW Standard Tools or copying the correct SGBD files from a reliable source. inpa error 159

A weak or drained battery can disrupt communication between INPA and your vehicle’s control units. Users have reported that after jump-starting a car with a depleted battery, diagnostic errors disappeared once the battery was sufficiently charged. The diagnostic bus requires stable voltage to function properly.

By methodically aligning your cable hardware switches, adjusting Windows latency down to 1ms, and verifying matching COM ports, you will resolve the communication timeout and clear the INPA Error 159 roadblock.

For remote configurations (GT1 Yellow Head or network setups): A poor-quality K+DCAN cable, a loose OBD2 port

Verify within INPA that both the and Ignition circles are filled solid black before proceeding with diagnostics. Fix 4: Update SP-DATEN Files

But if you see: [IFH-0010] ... – That means a short circuit on the K-Line. [IFH-0003] ... – That means incorrect baud rate (9600 vs 115200). Go back to latency settings.

The USB serial port settings in Windows default to a transmission delay that is too slow for BMW factory diagnostics. ) or the "Latency Timer" in your device

Right-click it and select , then go to the Port Settings tab. Click Advanced . Change the COM Port Number to COM1 . Change the Latency Timer (msec) from 16 down to 1 . Click OK to save and restart INPA. 3. Verify EDIABAS.INI Configuration

Is Error 159 happening across the entire car, or only when you click on one specific module (like the Airbag, ABS, or Transmission)?

This error means the INPA software sent a request to your car’s Electronic Control Unit (ECU), but the ECU did not respond within the allowed time limit. The software assumes the connection is broken and stops the operation. Primary Causes of Error 159