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 RX 350L FWDFACTORY OEM SERVICE PROCEDURE
Engine Control System - Diagnostic Codes (4 Of 7)
- SFI System
- DTC P0597-14: Thermostat Heater Control Circuit Short to Ground or Open [09/2015 - ]
- DTC P0604-44: Internal Control Module Random Access Memory (RAM) Error Data Memory Failure [09/2015 - ]
- DTC P0605-96: Control Module Performance Bank 2 Component Internal Failure; DTC P0607-96: Control Module Performance Bank 1 Component Internal Failure [09/2015 - ]
- DTC P0606-04: Control Module Processor System Internal Failure; DTC P0606-29: Control Module Processor Signal Invalid; DTC P0606-47: Control Module Processor Watchdog/Safety MCU Failure [09/2015 - ]
- DTC P060A-47: Internal Control Module Monitoring Processor Performance Watchdog/Safety MCU Failure [09/2015 - ]
- DTC P060B-49: Internal Control Module A/D Processing Performance Internal Electronic Failure [09/2015 - ]
- DTC P060D-49: Internal Control Module Accelerator Pedal Position Performance Internal Electronic Failure [09/2015 - ]
- DTC P060E-49: Internal Control Module Throttle Position Performance Internal Electronic Failure; DTC P061E-49: Internal Control Module Brake Signal Internal Electronic Failure [09/2015 - ]
- DTC P0615-12: Starter Relay Circuit Short to Battery [09/2015 - ]
- DTC P062F-44: Internal Control Module EEPROM Data Memory Failure [09/2015 - 12/2017]
- DTC P062F-44: Internal Control Module EEPROM Data Memory Failure [12/2017 - 08/2018]
- DTC P062F-44: Internal Control Module EEPROM Data Memory Failure [08/2018 - ]
- DTC P0630-51: VIN Not Programmed [09/2015 - ]
- DTC P0657-14: Actuator Supply Voltage "A" Circuit Short to Ground or Open [09/2015 - 08/2019]
- DTC P0657-14: Actuator Supply Voltage "A" Circuit Short to Ground or Open [08/2019 - ]
- DTC P0657-9E: Actuator Supply Voltage "A" Stuck On [09/2015 - ]
- DTC P0703-12: Brake Switch "B" Circuit Short to Battery [09/2015 - ]
- DTC P0705-13: Transmission Range Sensor "A" Circuit Open; DTC P0705-62: Transmission Range Sensor "A" Signal Compare Failure [09/2015 - 08/2019]
- DTC P0705-13: Transmission Range Sensor "A" Circuit Open; DTC P0705-62: Transmission Range Sensor "A" Signal Compare Failure [08/2019 - ]
- DTC P107A-11: Fuel Rail Pressure Sensor (Low) Circuit Short to Ground [09/2015 - 08/2019]
- DTC P107A-11: Fuel Rail Pressure Sensor (Low) / Fuel Rail Pressure Sensor "B" Circuit Short to Ground [08/2019 - ]
- DTC P107A-15: Fuel Rail Pressure Sensor (Low) Circuit Short to Battery or Open [09/2015 - 08/2019]
- DTC P107A-15: Fuel Rail Pressure Sensor (Low) / Fuel Rail Pressure Sensor "B" Circuit Short to Battery or Open [08/2019 - ]
- DTC P107A-2A: Fuel Rail Pressure Sensor (Low) Signal Stuck in Range; DTC P107A-64: Fuel Rail Pressure Sensor (Low) Signal Plausibility Failure [09/2015 - 12/2017]
- DTC P107A-2A: Fuel Rail Pressure Sensor (Low) Signal Stuck in Range; DTC P107A-64: Fuel Rail Pressure Sensor (Low) Signal Plausibility Failure [12/2017 - 08/2019]
- DTC P107A-2A: Fuel Rail Pressure Sensor (Low) / Fuel Rail Pressure Sensor "B" Signal Stuck in Range; DTC P107A-64: Fuel Rail Pressure Sensor (Low) / Fuel Rail Pressure Sensor "B" Signal Plausibility Failure [08/2019 - ]
- DTC P11EA-00: Bank 1 Air-Fuel Ratio Imbalance (Port); DTC P11EB-00: Bank 2 Air-Fuel Ratio Imbalance (Port); DTC P11EC-00: Cylinder #1 Air-Fuel Ratio Imbalance (Port); DTC P11ED-00: Cylinder #2 Air-Fuel Ratio Imbalance (Port); DTC P11EE-00: Cylinder #3 Air-Fuel Ratio Imbalance (Port); DTC P11EF-00: Cylinder #4 Air-Fuel Ratio Imbalance (Port); DTC P11F0-00: Cylinder #5 Air-Fuel Ratio Imbalance (Port); DTC P11F1-00: Cylinder #6 Air-Fuel Ratio Imbalance (Port); DTC P219A-00: Bank 1 Air-Fuel Ratio Imbalance; DTC P219B-00: Bank 2 Air-Fuel Ratio Imbalance; DTC P219C-00: Cylinder 1 Air-Fuel Ratio Imbalance; DTC P219D-00: Cylinder 2 Air-Fuel Ratio Imbalance; DTC P219E-00: Cylinder 3 Air-Fuel Ratio Imbalance; DTC P219F-00: Cylinder 4 Air-Fuel Ratio Imbalance; DTC P21A0-00: Cylinder 5 Air-Fuel Ratio Imbalance; DTC P21A1-00: Cylinder 6 Air-Fuel Ratio Imbalance [09/2015 - 12/2017]
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.