2007 Lexus GS 430FACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Chart: Notes

If a DTC is displayed during the DTC check, check the parts listed in the table below and proceed to the page given.

HINT:

  • *1: Comes on MIL (Malfunction Indicator Lamp) light up
  • *2: "DTC stored" mark means ECM memorizes the malfunction code if the ECM detects the DTC detection condition.
  • This DTC may be output when the clutch, brake and gear components etc. inside the automatic transmission are damaged.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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