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2007 LEXUS GS 430
4.3L V8•RWD•AUTOMATIC•gas
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Repairs0Labor478Torque2122Fluid8DTC1857Battery1Maintenance0Recalls0
C1439high severityChassis

Deceleration Sensor Malfunction

on 2007 Lexus GS 430 4.3L V8 · RWD

What this code means

The deceleration sensor is reporting abnormal values to the brake control module. No direct OBD P-code equivalent exists for this chassis code.

Symptoms

  • ABS/VSC warning light on
  • Reduced stability control
  • Traction control off

Common causes

  • Faulty deceleration sensor
  • Sensor out of calibration
  • Poor sensor mounting
  • Damaged wiring or connector

Diagnostic steps

  1. Scan for fault codes
  2. Inspect sensor mounting and wiring
  3. Verify sensor output data
  4. Calibrate or replace sensor
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