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2007 LEXUS GS 430
4.3L V8•RWD•AUTOMATIC•gas
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Repairs0Labor478Torque2122Fluid8DTC1857Battery1Maintenance0Recalls0
C1245high severityChassis

Deceleration Sensor Output Voltage Malfunction

on 2007 Lexus GS 430 4.3L V8 · RWD

What this code means

The deceleration sensor is producing an output voltage outside the expected range. No direct OBD P-code equivalent exists for this manufacturer-specific code.

Symptoms

  • ABS warning light on
  • VSC/traction light on
  • Inconsistent braking behavior

Common causes

  • Faulty deceleration sensor
  • Sensor voltage supply issue
  • Damaged sensor wiring
  • Poor connector contact

Diagnostic steps

  1. Read sensor output voltage with scan tool
  2. Compare readings to specification
  3. Check sensor power and ground
  4. Replace deceleration sensor if out of range
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