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2006 LEXUS GS 430
4.3L V8•RWD•AUTOMATIC•gas
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Repairs0Labor478Torque2122Fluid8DTC1846Battery1Maintenance0Recalls0
C1392high severityChassis

Front Speed Sensor LH Circuit Malfunction

on 2006 Lexus GS 430 4.3L V8 · RWD

What this code means

A circuit fault was detected in the front left wheel speed sensor. Similar to OBD code C0031.

Symptoms

  • ABS warning light on
  • Traction control disabled
  • Erratic speedometer reading

Common causes

  • Faulty front left wheel speed sensor
  • Damaged sensor wiring
  • Corroded connector
  • Debris on tone ring

Diagnostic steps

  1. Scan for wheel speed codes
  2. Inspect sensor and tone ring
  3. Test wiring continuity
  4. Replace sensor if needed
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