What it is
EDC15 is the Bosch diesel ECU of the late 1990s and early 2000s. It’s in the Volkswagen Group’s 1.9 TDI and 2.0 TDI, Fiat and Alfa Romeo’s 1.9 JTD, and Volvo and BMW diesels (OpenRemap). OpenRemap tells two memory layouts apart: one carries a marker from Bosch’s build tools, and in the other a filler byte, C3, covers much of the memory (OpenRemap).
What a file from it looks like
A whole EDC15 read is 512 KB. OpenRemap’s family table says it’s always that size (OpenRemap). Some reading tools save the memory as .hex or .s19 instead of .bin, and EcuInside reads those too.
What the numbers look like
The software number is ten digits starting with 1037 (OpenRemap). The Bosch hardware number isn’t stored in the file. It’s on the label, and sometimes in the file name a reading tool gave the file (OpenRemap). On a Bosch label, a hardware number starting 0 281 means a diesel ECU (Autotuner).
What EcuInside reads from it
The family, the software number, the carmaker’s part number when the file has it, and the size check. Because the hardware number never lives in an EDC15 file, the result says it’s on the label rather than calling the read incomplete.
Full read or partial?
512 KB is a whole read. A smaller file is only part of the memory, and a bigger one is unusual for this family. The result tells you which.
Have a Bosch EDC15 read? Drop it on EcuInside and see its variant, its numbers with the bytes they came from, and whether it’s a whole read. Free, and the file isn’t kept.
Sources
- OpenRemap documentation, manufacturers and families, and its family table in OpenRemap 0.9.0 (checked Nov 7 2026)
- Autotuner, “ECU manufacturers and their evolution” (Jun 30 2025)
- Autotuner, “A lexical guide” (Jun 20 2025)
Read next
Updated November 8, 2026.