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2003 LEXUS GS 430

4.3L V8•RWD•AUTOMATIC•gas
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Repairs0Labor563Torque3455Fluid7DTC734Battery0Maintenance0Recalls0
P1500moderate severityPowertrain

Starter Signal Circuit

on 2003 Lexus GS 430 4.3L V8 · RWD

What this code means

The ECM is not receiving the proper signal from the starter motor circuit.

Symptoms

  • CEL
  • Extended cranking
  • Rough startup
  • Poor cold start

Common causes

  • Faulty starter relay
  • Damaged wiring
  • Poor ground
  • Faulty ignition switch

Diagnostic steps

  1. Test starter signal wire
  2. Check relay operation
  3. Inspect wiring
  4. Test ignition switch

Repair notes

Repair starter signal circuit.

Other Powertrain codes on this vehicle

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