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.
2009 Lexus LS 460L AWDFACTORY OEM SERVICE PROCEDURE
Engine Control System - Diagnostic Codes (3 Of 4)
- DTC P0451 Evaporative Emission Control System Pressure Sensor Range/Performance; DTC P0452 Evaporative Emission Control System Pressure Sensor/Switch Low Input; DTC P0453 Evaporative Emission Control System Pressure Sensor/Switch High Input
- DTC P0455 Evaporative Emission Control System Leak Detected (Gross Leak); DTC P0456 Evaporative Emission Control System Leak Detected (Very Small Leak)
- DTC P0500 Vehicle Speed Sensor "A"
- DTC P0504 Brake Switch "A"/"B" Correlation
- DTC P0505 Idle Control System Malfunction
- DTC P050A Cold Start Idle Air Control System Performance; DTC P050B Cold Start Ignition Timing Performance
- DTC P0560 System Voltage
- DTC P0604 Random Access Memory (RAM)
- DTC P0606 ECM/PCM Processor
- DTC P0607 Control Module Performance
- DTC P0617 Starter Relay Circuit High
- DTC P0630 VIN not Programmed or Mismatch - ECM/PCM
- DTC P0657 Actuator Supply Voltage Circuit/Open
- DTC P0661 Intake Manifold Tuning Valve Control Circuit Low; DTC P0662 Intake Manifold Tuning Valve Control Circuit High
- DTC P0705 Transmission Range Sensor Circuit Malfunction (PRNDL Input)
- DTC P0724 Brake Switch "B" Circuit High
- DTC P1023 Camshaft Position Signal Output "B" Circuit; DTC P2614 Camshaft Position Signal Output Circuit/Open
- DTC P1235 High Pressure Fuel Pump Circuit; DTC P1236 High Pressure Fuel Pump No. 2 Circuit
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:
- • 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.
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