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 (7 Of 7)
- SFI System
- 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 [12/2017 - 08/2018]
- 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 [08/2018 - 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 [08/2019 - ]
- DTC P1235-13: High Pressure Fuel Pump Circuit Open [09/2015 - ]
- DTC P1603-00: Engine Stall History [09/2015 - 08/2018]
- DTC P1603-00: Engine Stall History [08/2018 - ]
- DTC P1604-00: Startability Malfunction [09/2015 - ]
- DTC P1605-00: Rough Idling [09/2015 - ]
- DTC P1607-00: Cruise Control Input Processor [09/2015 - ]
- DTC P2100-14: Throttle Actuator "A" Control Motor Circuit Short to Ground or Open; DTC P2100-15: Throttle Actuator "A" Control Motor Circuit Short to Battery or Open [09/2015 - 08/2019]
- DTC P2100-18: Throttle Actuator "A" Control Motor Circuit Current Below Threshold; DTC P2100-19: Throttle Actuator "A" Control Motor Circuit Current Above Threshold [08/2019 - ]
- DTC P2109-00: Throttle/Pedal Position Sensor "A" Minimum Stop Performance [09/2015 - ]
- DTC P2111-72: Throttle Actuator "A" Control System Actuator Stuck Open; DTC P2111-73: Throttle Actuator "A" Control System Actuator Stuck Closed [09/2015 - 08/2019]
- DTC P2111-72: Throttle Actuator "A" Control System Actuator Stuck Open; DTC P2111-73: Throttle Actuator "A" Control System Actuator Stuck Closed [08/2019 - ]
- DTC P2119-00: Throttle Actuator "A" Control Throttle Body Range/Performance; DTC P2119-04: Throttle Actuator "A" Control Throttle Body Range/Performance System Internal Failure; DTC P2119-77: Throttle Actuator "A" Control Throttle Body Range/Performance Commanded Position Not Reachable [09/2015 - 08/2019]
- DTC P2119-00: Throttle Actuator "A" Control Throttle Body Range/Performance; DTC P2119-04: Throttle Actuator "A" Control Throttle Body Range/Performance System Internal Failure; DTC P2119-77: Throttle Actuator "A" Control Throttle Body Range/Performance Commanded Position Not Reachable [08/2019 - ]
- DTC P2120-12: Throttle/Pedal Position Sensor/Switch "D" Circuit Short to Battery; DTC P2120-14: Throttle/Pedal Position Sensor/Switch "D" Circuit Short to Ground or Open; DTC P2120-1F: Throttle/Pedal Position Sensor/Switch "D" Circuit Intermittent; DTC P2125-12: Throttle/Pedal Position Sensor/Switch "E" Circuit Short to Battery; DTC P2125-14: Throttle/Pedal Position Sensor/Switch "E" Circuit Short to Ground or Open; DTC P2125-1F: Throttle/Pedal Position Sensor/Switch "E" Circuit Intermittent; DTC P2138-2B: Throttle/Pedal Position Sensor/Switch "D"/"E" Voltage Correlation Signal Cross Coupled [09/2015 - ]
- DTC P2120-1C: Throttle/Pedal Position Sensor/Switch "D" Circuit Voltage Out of Range; DTC P2120-99: Throttle/Pedal Position Sensor/Switch "D" Exceeded Learning Limit [09/2015 - ]
- DTC P2195-19: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Circuit Current Above Threshold; DTC P2195-24: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Signal Stuck High; DTC P2196-18: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 Circuit Current Below Threshold; DTC P2196-23: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 Signal Stuck Low; DTC P2197-19: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 2 Sensor 1 Circuit Current Above Threshold; DTC P2197-24: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 2 Sensor 1 Signal Stuck High; DTC P2198-18: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 2 Sensor 1 Circuit Current Below Threshold; DTC P2198-23: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 2 Sensor 1 Signal Stuck Low [08/2018 - 08/2019]
- DTC P2195-19: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Circuit Current Above Threshold; DTC P2195-24: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Signal Stuck High; DTC P2196-18: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 Circuit Current Below Threshold; DTC P2196-23: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 Signal Stuck Low; DTC P2197-19: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 2 Sensor 1 Circuit Current Above Threshold; DTC P2197-24: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 2 Sensor 1 Signal Stuck High; DTC P2198-18: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 2 Sensor 1 Circuit Current Below Threshold; DTC P2198-23: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 2 Sensor 1 Signal Stuck Low [08/2019 - ]
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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