Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Cruise Control DTCS
CRUISE CONTROL DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| P0500/21, 23 | Vehicle speed sensor circuit |
| P1520/52 | Stop light switch circuit |
| P1566/54 | Input signal circuit |
| P1615/61 | Communication error from distance control ECU to ECM |
| P1616/62 | Communication error from ECM to distance control ECU |
| P1617/63 | Distance control ECU malfunction |
| P1630/64 | Communication error from skid control ECU to ECM |
| P1631/65 | Communication error from ECM to skid control ECU |
| P1575/66 | Warning buzzer malfunction |
| P1576/67 | Steering angle sensor malfunction |
| P1577/68 | Yaw rate sensor malfunction |
| P1578/69 | Brake system malfunction |
| P1618/71 | Communication error from laser radar sensor to distance control ECU |
| P1619/72 | Communication error from distance control ECU to laser radar sensor |
| P1570/73 | laser radar sensor malfunction |
| P1572/75 | Improper aiming of laser radar sensor beam axis |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.