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2005 LEXUS GS 430

4.3L V8•RWD•AUTOMATIC•gas
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Repairs0Labor563Torque3455Fluid7DTC824Battery0Maintenance0Recalls0
P1129high severityPowertrain

Electric Throttle Control System

on 2005 Lexus GS 430 4.3L V8 · RWD

What this code means

A general fault detected in the Electronic Throttle Control System.

Symptoms

  • CEL
  • Failsafe mode
  • Reduced power
  • Erratic throttle

Common causes

  • Multiple ETCS failures
  • Wiring issues
  • ECM malfunction
  • Throttle body failure

Diagnostic steps

  1. Run full ETCS diagnostics
  2. Check all related sensors
  3. Inspect wiring
  4. Test ECM outputs

Repair notes

Diagnose and repair specific ETCS component.

Other Powertrain codes on this vehicle

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