Losing power during a write can leave uncertainty about which information was successfully stored. The outcome depends on the memory and the operation in progress.
How to narrow it down
Preserve the original module and all available logs before retrying. Record whether the interruption happened during erase, transfer, verification or finalisation. A specialist can then assess supported recovery options and compare available backups rather than overwriting the remaining evidence.
What to include with the fault report
Provide the tool log, file identity and details of the power interruption.
Recovery cannot be promised from the interruption description alone. Avoid repeated write attempts with unverified files.
Speak to AXION
For module programming and coding support, send your vehicle details and fault report. Workshop assessment is in Didcot, Oxfordshire. Suitable postal or remote work is confirmed before booking.
Technical background from STMicroelectronics. The referenced design explains the principle; the vehicle-specific procedure determines the repair.
Related reading — An all-FF EEPROM file is not automatically a valid blank memory. Browse all vehicle-electronics diagnostic notes or return to the repair library.