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C0035 C0xxx · 底盘（C） 高严重度
Left Front Wheel Speed Sensor Circuit
No usable signal from the left front wheel speed sensor. ABS and stability control are disabled as soon as one wheel is unknown.
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 lamp on
- ABS not functioning
- Speedometer may drop out
- Traction/ESP lamp on
常见原因
按可能性从高到低排列——从最上面开始查。
- 1 Failed wheel speed sensor
- 2 Damaged or corroded tone ring
- 3 Broken wiring near the strut (flex point)
- 4 Debris or rust buildup on the sensor face
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。
- ✓ Compare all four wheel speeds in live data while rolling slowly — the faulty wheel reads zero or drops out.
- ✓ Inspect the sensor wiring where it flexes with suspension travel.
- ✓ Check the tone ring for cracks, rust or missing teeth.
- ✓ Scope the sensor output while spinning the wheel by hand.
维修方案
- Replace the wheel speed sensor
- Repair the wiring
- Replace the tone ring or hub assembly
C0035 —— 常见问题
Is the car safe to drive? +
Brakes still work, but ABS and stability control do not. Drive carefully and repair promptly.
Why does it only fail at low speed? +
Inductive sensors produce a weak signal at low speed; a marginal sensor drops out first when parking.