Alientech KESS3 ECU Communication Error Solution

By | May 8, 2024


I have tried to read this ECU Bosch ME7.6.2 through the Alientech KESS3 Bench mode and it’s doesn’t respond. Does its mean the ECU is damaged? Any help?

Kess3 Ecu Communication Error

Possible solutions to KESS3 ECU communication error:

1. The device does not respond to communication with the ECU, maybe you can try changing the voltage (Power supply) to a more suitable one.
2. Sometimes you have to try many times. Always double and triple check connections.

3. There is a possibility that the protocol is not working. Check coverage before reading.

4. The ECU is damaged.

5. Open a ticket and seek help from Alientech technicians.