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Bosch MEVD17.2.X - TC1797

Bosch MEVD17.2.X - TC1797 FAQ & Error Solutions

Bosch MEVD17.2.X - TC1797

Errors

Quickly identify and resolve common issues encountered while working with the Bosch MEVD17.2.X control unit.

Checksum is invalid. error code : 0x00000001

This error occurs when the ECU detects inconsistent data integrity values, often due to previous modifications by other tools.

View Solution →

Concerns vehicles from

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Checksum is invalid. error code : 0x00000001

Method: BENCH

Issue: The user encounters a verification failure where the internal checksum values of the file do not match the parameters expected by the ECU.

Solution
  • In most cases involving BOSCH MEDC17 architecture, you can safely ignore this warning and proceed with the programming process.
  • If the same error message appears during the actual programming/writing phase, do not attempt to force it.
  • Instead, Contact our technical support with the logs of your session.
To understand more

A checksum is a mathematical verification used to ensure data integrity. This specific error often triggers because the ECU was previously tuned or modified using a different flashtool that didn't calculate the checksums according to standard Bosch protocols, or left them in an "invalid" state that bFlash detects during the initial safety check.