Inpa Error 159 2021 Jun 2026

In plain English, this means that INPA sent a request to a specific ECU (control unit) in your car, but the ECU never answered. The software waited for a reply, timed out, and threw error 159.

The vehicle ignition may be turned off, preventing the ECU from receiving power. Recommended Troubleshooting Steps inpa error 159

: Ensure your cable is assigned to COM1 in Windows Device Manager. In plain English, this means that INPA sent

Disclaimer: Modifying vehicle software and using diagnostic tools like INPA carries inherent risks. Always back up your existing data and proceed at your own risk. The author is not responsible for any damage to your vehicle or computer. Recommended Troubleshooting Steps : Ensure your cable is

To fix the problem, you first need to identify why the ECU is not responding. Below are the nine most common culprits:

When you first launch INPA, the main menu shows two indicators at the bottom: