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C0550 C0xxx · シャシ (C) 重大度中
ECU / Module Not Configured or Configuration Mismatch
A chassis module has no valid configuration or the vehicle data does not match. Typical after a used-module swap or an interrupted coding session.
重大度の目安： 中 — 走行性または排出ガスに影響。今週中に点検を予約してください
確認できる症状
- Module faults and lamps on
- Functions missing or behaving wrongly
- Vehicle options not recognised
主な原因
可能性の高い順に並んでいます。上から順に確認してください。
- 1 Replacement module not coded
- 2 Incorrect part number fitted
- 3 Interrupted programming
- 4 Software mismatch
点検・修理の手順
費用が安く侵襲の小さい項目から — これらのコードの大半は部品の問題ではありません。
- ✓ Verify the fitted part number matches the vehicle specification.
- ✓ Check whether programming was interrupted (supply voltage during coding matters).
- ✓ Perform the coding/configuration procedure with the correct tooling.
- ✓ Clear codes and run a full system scan afterwards.
修理の選択肢
- Code the module with the correct vehicle data
- Fit the correct part number
- Repeat the programming with a stable power supply
C0550 — よくあるご質問
Why does a used module cause this? +
It carries the donor vehicle's configuration. Correct coding is mandatory, not optional.
Is a stable power supply really that important? +
Yes. Voltage dips during coding are the single biggest cause of bricked modules — use a supply unit.