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xDecoder DTC OFF is a professional offline software tool designed to permanently disable and remove diagnostic trouble codes (DTC) directly from ECU flash and EEPROM files. It is widely used by ECU tuning specialists, chip tuning workshops, and advanced technicians who need reliable DTC OFF functionality without online servers or token limitations.
The software works by analyzing ECU dumps and automatically locating fault code routines, allowing safe removal of selected DTCs related to emissions systems, sensors, or permanently stored errors. According to professional tuning forums, xDecoder is commonly used after hardware modifications or ECU recalibration, where certain diagnostic codes are no longer required.
xDecoder DTC OFF supports multi-brand ECUs and works completely offline. The tool allows fast DTC removal from binary files without manual hex editing, making it suitable even for daily workshop use. It is often used together with ECU reading tools such as KESS, KTAG, PCMFlash, Autotuner, or similar devices (not included).
The software does not require an internet connection and has no usage limits, subscriptions, or token systems. All processing is done locally on your PC.
Supported use cases include:
• Permanent DTC removal from ECU files
• Post-tuning error cleanup
• Emission-related DTC suppression (where legally permitted)
• ECU repair and testing workflows
• Operating system: Windows 10 / Windows 11 (64-bit)
• CPU: Intel or AMD (64-bit)
• RAM: 4 GB minimum
• Disk space: 200 MB
• Internet connection: Not required (offline use)
• xDecoder DTC OFF version 12.7 software
• Activation tool
• Basic usage instructions
• Secure digital download
Digital product only.
Secure download link provided after purchase.
No physical item will be shipped.
This software is a third-party tool and is not affiliated with, endorsed by, or connected to any vehicle manufacturer. Brand names are used strictly for compatibility and identification purposes.
