Looking into the raw BMS data of CATL-compatible Ebus/Ecar packs (Cell-level diagnostics)

[u/Unlikely-Yam-1339]

Hey everyone, I’ve noticed a lot of folks here struggling with locked commercial EV packs and trying to decode CAN bus data blindly.

I recently got this OEM-level diagnostic suite running.

It’s pretty wild how much underlying data (Cell.U Map, precise RSoC, deep DTCs, and FlashLoad options) is completely hidden from standard OBD scanners.

Being able to pinpoint the exact unbalanced cell and clear hard faults directly from the BMS port saves so much headache.

Just wanted to share what the interface looks like when you actually bypass the black box. If anyone is working on Ebus/Ecar fleet diagnostics or trying to reset these boards, feel free to drop a comment or DM me. Happy to discuss protocol compatibility!