Inpa Error 159 !!install!! Jun 2026

The aftermarket adapter had no bridge between pin 17 (Battery+) and pin 20 (Ignition). The DME stayed in sleep mode.

INPA (Interface for NCS & NCP) is a software tool used for diagnostics and programming of BMW vehicles. However, some users have reported encountering an error code, specifically "INPA Error 159". This report aims to provide an overview of the error, its possible causes, and potential solutions. inpa error 159

When this error triggers, the EDIABAS server sends a request but receives no acknowledgement from the specific ECU. If you can reach some modules (like the Engine) but not others (like the Airbag), the issue is almost always the or a specific module being "asleep" or faulty. The aftermarket adapter had no bridge between pin