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C1100 C0xxx · 底盘（C） 高严重度
Chassis Control Module Power / Internal Fault
Generic chassis module fault. As with every internal-fault code, rule out supply, earth and water before replacing anything.
严重程度说明： 高——立即停车诊断，继续行驶有扩大损坏的风险
你会注意到的故障现象
- ABS/ESP warnings
- Multiple chassis codes
- Possible loss of braking assistance features
常见原因
按可能性从高到低排列——从最上面开始查。
- 1 Supply voltage out of range
- 2 Poor earth
- 3 Water ingress
- 4 Internal failure
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。
- ✓ Measure supply and earth at the module under load.
- ✓ Load-test the battery and check charging voltage.
- ✓ Inspect for water or corrosion at the connector.
- ✓ Only replace the module after all of the above pass.
维修方案
- Repair the supply or earth
- Replace the battery if weak
- Replace the module as a last resort
C1100 —— 常见问题
Why do so many codes appear together? +
Shared power or earth. Fix the supply and most of them clear in one go.
Can a weak battery really disable ABS? +
Yes. ABS modules are voltage-sensitive and will shut down functions below threshold.