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.
2016 Lexus GS 200t BaseFACTORY OEM SERVICE PROCEDURE
Engine Control System - Diagnostic Codes (4 Of 5)
- SFI System
- DTC P0420-00: Catalyst System Efficiency Below Threshold Bank 1 [10/2015 - ]
- DTC P043E-00: Evaporative Emission System Leak Detection Reference Orifice Low Flow; DTC P043F00: Evaporative Emission System Leak Detection Reference Orifice High Flow; DTC P24007E: Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck On; DTC P24007F: Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck Off; DTC P24187E: Evaporative Emission System Switching Valve Control Circuit Actuator Stuck On [10/2015 - 09/2018]
- DTC P043E-00: Evaporative Emission System Leak Detection Reference Orifice Low Flow; DTC P043F00: Evaporative Emission System Leak Detection Reference Orifice High Flow; DTC P24007E: Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck On; DTC P24007F: Evaporative Emission System Leak Detection Pump Control Circuit Actuator Stuck Off; DTC P24187E: Evaporative Emission System Switching Valve Control Circuit Actuator Stuck On [09/2018 - ]
- DTC P0441-9C: Evaporative Emission System Incorrect Purge Flow Low/Insufficient Flow [10/2015 - ]
- DTC P0450-11: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Ground; DTC P045015: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Battery or Open; DTC P04502F: Evaporative Emission System Pressure Sensor/Switch Signal Erratic [10/2015 - 09/2018]
- DTC P0450-11: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Ground; DTC P045015: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Battery or Open; DTC P04502F: Evaporative Emission System Pressure Sensor/Switch Signal Erratic [09/2018 - ]
- DTC P0455-00: Evaporative Emission System Leak Detected (Large Leak); DTC P045600: Evaporative Emission System Leak Detected (Very Small Leak) [10/2015 - 09/2018]
- DTC P0455-00: Evaporative Emission System Leak Detected (Large Leak); DTC P045600: Evaporative Emission System Leak Detected (Very Small Leak) [09/2018 - ]
- DTC P0460-12: Fuel Level Sensor "A" Circuit Short to Battery; DTC P046014: Fuel Level Sensor "A" Circuit Short to Ground or Open [09/2018 - ]
- DTC P0460-2A: Fuel Level Sensor "A" Signal Stuck In Range [09/2018 - ]
- DTC P04DB-00: Crankcase Ventilation System Disconnected [10/2015 - 09/2018]
- DTC P04DB-00: Crankcase Ventilation System Disconnected [09/2018 - ]
- DTC P0500-31: Vehicle Speed Sensor "A" No Signal [10/2015 - ]
- DTC P0504-2B: Brake Switch "A"/"B" Signal Cross Coupled [10/2015 - ]
- DTC P0505-00: Idle Control System [10/2015 - 09/2016]
- DTC P0505-00: Idle Control System [09/2016 - 09/2018]
- DTC P0505-00: Idle Control System [09/2018 - ]
- DTC P050A-00: Cold Start Idle Control System Performance [10/2015 - ]
- DTC P050B-00: Cold Start Ignition Timing Performance [10/2015 - ]
- DTC P0520-12: Engine Oil Pressure Sensor/Switch "A" Circuit Short to Battery; DTC P052014: Engine Oil Pressure Sensor/Switch "A" Circuit Short to Ground or Open; DTC P052024: Engine Oil Pressure Sensor/Switch "A" Signal Stuck High; DTC P05202A: Engine Oil Pressure Sensor/Switch "A" Signal Stuck in Range; DTC P052400: Engine Oil Pressure Too Low [10/2015 - ]
- DTC P0560-14: System Voltage Circuit Short to Ground or Open [10/2015 - ]
- DTC P0604-44: Internal Control Module Random Access Memory (RAM) Error Data Memory Failure [10/2015 - ]
- DTC P0606-04: Control Module Processor System Internal Failure; DTC P060629: Control Module Processor Signal Invalid; DTC P060647: Control Module Processor Watchdog/Safety MCU Failure [10/2015 - ]
- DTC P0607-96: Control Module Performance Bank 1 Component Internal Failure [10/2015 - ]
- DTC P060A-47: Internal Control Module Monitoring Processor Performance Watchdog/Safety MCU Failure [10/2015 - ]
- DTC P060B-49: Internal Control Module A/D Processing Performance Internal Electronic Failure [10/2015 - ]
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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