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Bosch EDC17C41 - TC1797

Bosch EDC17C41 - TC1797 FAQ

Errors

Quick access to common issues and solutions for the Bosch EDC17C41 ECU.

7F-22-12: UDS readDataByIdentifier Rx error. @ 0xF190

This error occurs on BMW Exx models because the OBD read attempt uses the wrong protocol (UDS instead of KWP).

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7F-22-12: UDS readDataByIdentifier Rx error. @ 0xF190

Method: OBD / Recovery: Bench

Issue: A communication error is received when trying to read the ECU via the OBD port on certain vehicles.

Solution
  • Instead of using the OBD port, connect to the ECU and perform the read operation in Bench mode.
To understand more

This error specifically affects older BMW Exx series vehicles, which use the KWP communication protocol for diagnostics. The OBD reading tool attempts to use the newer UDS protocol, causing a mismatch and failure. Bench mode bypasses this protocol-specific OBD limitation, allowing for a direct and successful connection.