| Error | Likely Cause | Solution | | :--- | :--- | :--- | | “CAFD not found” | Missing PSdZData for your I-Level | Update PSdZData to match vehicle | | “VIN mismatch” | Wrong target selector | Choose proper chassis (e.g., S15A for G20) | | “Transaktions-Report” red | Value out of range | Restore original NCD and retry | | ECU not responding | Low battery or faulty connection | Charge battery, check ENET cable |
As BMW releases newer software updates (ISTA 4.4x.x and beyond), some codes get locked or moved. For G-Series cars on 07/2023+ software, you will likely need and a paid token for mapping. bmw esys coding cheat sheet