Inpa Error 159 Jun 2026

Verify the line reads Interface = STD:OBD (unless using specialized hardware like ICOM or a Yellowhead).

Use a simple serial terminal like or RealTerm to send an AT command to the cable. If you do not see any response, the cable or driver is faulty. inpa error 159

INPA relies on specific data files ( .IPO , .PRG , .GRP ) for each ECU. If you are trying to diagnose a car with newer software (e.g., an F-series BMW) using outdated E-series DATEN files, INPA might attempt to call a routine that the ECU does not recognize, resulting in a "no response" error. Verify the line reads Interface = STD:OBD (unless

Verify your cable supports ignition detection. Cheap eBay cables (often with blue circuit boards) are notorious for failing this. If you're using a 20-pin adapter for older BMWs, you may need to bridge to pass the ignition signal. 3. Incorrect COM Port Settings INPA relies on specific data files (

: Antivirus or firewall programs frequently disrupt the communication between the EDIABAS server and the diagnostic interface.

Cheap $10 cables often have faulty voltage regulators or counterfeit chips that will never work reliably.