What this code means

The left front wheel speed sensor signal drops out intermittently during driving.

Symptoms

• ABS light on intermittently
• Sporadic traction control activation
• ABS works sometimes but not always

Common causes

• Damaged wiring at flex point near suspension
• Corroded connector pins
• Intermittent sensor internal fault
• Loose sensor mounting

Diagnostic steps

1. Wiggle-test wiring harness while monitoring sensor signal
2. Inspect connector for corrosion or backed-out pins
3. Check sensor mounting bolt torque
4. Road test while monitoring live data
5. Inspect wiring routing near suspension components

Repair notes

Repair wiring at chafe point or replace connector. Re-secure sensor.

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