How to Solve Xhorse Multi-Prog Failed to Read VW EDC17C74 ECU Problem?

XhorseVVDI.com’s Customer Feedback:

When reading a VW EDC17C74 ECU in Bench Mode with the Xhorse Multi-Prog Programmer, you may encounter the error message “Failed to load S0.” This issue is usually caused by power, network, or wiring problems.

Possible Solutions:

1. Check the Power Supply
Make sure the power supply voltage is above 13.5V. Insufficient voltage may prevent the ECU from entering the correct communication mode.

2. Verify Your Internet Connection
The Multi Prog requires an active internet connection for some operations. If the network is unstable or disconnected, reconnect to the internet and try again.

3. Double-Check the Bench Wiring
Incorrect bench wiring can also trigger the “Failed to load S0” error. Carefully inspect all wiring connections between the ECU and the Multi Prog, ensuring every pin is connected correctly according to the wiring diagram.

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