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.
2021 Lexus LC 500hFACTORY OEM SERVICE PROCEDURE
Engine Control System - Diagnostic Codes (6 Of 9)
- SFI System
- DTC P050A-00: Cold Start Idle Control System Performance [04/2020 - ]
- DTC P050B-00: Cold Start Ignition Timing Performance [01/2017 - 09/2018]
- DTC P050B-00: Cold Start Ignition Timing Performance [09/2018 - 04/2020]
- DTC P050B-00: Cold Start Ignition Timing Performance [04/2020 - ]
- DTC P0560-14: System Voltage Circuit Short to Ground or Open [01/2017 - 05/2023]
- DTC P0560-14: System Voltage Circuit Short to Ground or Open [05/2023 - ]
- DTC P0604-44: Internal Control Module Random Access Memory (RAM) Error Data Memory Failure [01/2017 - 05/2023]
- DTC P0604-44: Internal Control Module Random Access Memory (RAM) Error Data Memory Failure [05/2023 - ]
- DTC P0606-47: Control Module Processor Watchdog/Safety MCU Failure [01/2017 - 05/2023]
- DTC P0606-47: Control Module Processor Watchdog/Safety MCU Failure [05/2023 - ]
- DTC P060A-47: Internal Control Module Monitoring Processor Performance Watchdog/Safety MCU Failure [01/2017 - 05/2023]
- DTC P060A-47: Internal Control Module Monitoring Processor Performance Watchdog/Safety MCU Failure [05/2023 - ]
- DTC P060B-49: Internal Control Module A/D Processing Performance Internal Electronic Failure [01/2017 - 05/2023]
- DTC P060B-49: Internal Control Module A/D Processing Performance Internal Electronic Failure [05/2023 - ]
- DTC P060E-49: Internal Control Module Throttle Position Performance Internal Electronic Failure [01/2017 - 05/2023]
- DTC P060E-49: Internal Control Module Throttle Position Performance Internal Electronic Failure [05/2023 - ]
- DTC P062F-44: Internal Control Module EEPROM Data Memory Failure [01/2017 - 09/2018]
- DTC P062F-44: Internal Control Module EEPROM Data Memory Failure [09/2018 - 05/2023]
- DTC P062F-44: Internal Control Module EEPROM Data Memory Failure [05/2023 - ]
- DTC P0630-51: VIN Not Programmed [01/2017 - ]
- DTC P0657-14: Actuator Supply Voltage "A" Circuit Short to Ground or Open [01/2017 - 04/2020]
- DTC P0657-14: Actuator Supply Voltage "A" Circuit Short to Ground or Open [04/2020 - ]
- DTC P0657-9E: Actuator Supply Voltage "A" Stuck On [01/2017 - 05/2023]
- DTC P0657-9E: Actuator Supply Voltage "A" Stuck On [05/2023 - ]
- DTC P106A-62: Evaporative Emission System Pressure / Intake Air Pressure Signal Compare Failure; DTC P106C-62: Evaporative Emission System Pressure/Barometric Pressure Signal Compare Failure [01/2017 - 04/2020]
- DTC P106A-62: Evaporative Emission System Pressure / Intake Air Pressure Signal Compare Failure; DTC P106C-62: Evaporative Emission System Pressure/Barometric Pressure Signal Compare Failure [04/2020 - 11/2021]
- DTC P106A-62: Evaporative Emission System Pressure / Intake Air Pressure Signal Compare Failure; DTC P106C-62: Evaporative Emission System Pressure/Barometric Pressure Signal Compare Failure [11/2021 - ]
- DTC P107A-11: Fuel Rail Pressure Sensor (Low) Circuit Short to Ground [01/2017 - 04/2020]
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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