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C1200 C0xxx · 底盘（C） 中严重度
ABS / Traction Control System Disabled (Torque Request Rejected)
The chassis module asked the engine ECU to reduce torque and the request was refused or timed out — usually a network or coding issue between modules.
严重程度说明： 中——已影响行驶或排放，请本周内安排检修
你会注意到的故障现象
- Traction and stability lamps on
- Wheelspin not controlled
- No codes in the engine ECU
常见原因
按可能性从高到低排列——从最上面开始查。
- 1 CAN communication fault between ABS and engine ECU
- 2 Coding mismatch after module replacement
- 3 Engine ECU faults preventing torque intervention
- 4 Software incompatibility
如何排查
先做花钱最少、侵入最小的检查——大多数这类码不是零件问题。
- ✓ Scan both the ABS and engine ECUs and compare their views of the torque request.
- ✓ Check coding and variant data in both modules.
- ✓ Verify CAN termination and look for accompanying U-codes.
- ✓ Check for applicable software updates.
维修方案
- Correct module coding
- Repair the CAN wiring
- Apply software updates
C1200 —— 常见问题
Is anything physically broken? +
Usually not. This is a communication or configuration problem between two healthy modules.
Can I still drive normally? +
Yes, but wheelspin and stability intervention will not be managed. Take care in slippery conditions.