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 NX 300h BaseFACTORY OEM SERVICE PROCEDURE
Engine Control System - Diagnostic Codes (5 Of 6)
- SFI System
- DTC P0606: ECM / PCM Processor [10/2014 - 09/2016]
- DTC P0606: ECM / PCM Processor [09/2016 - 05/2019]
- DTC P0606: ECM / PCM Processor [05/2019 - ]
- DTC P0607: Control Module Performance [10/2014 - ]
- DTC P060A: Internal Control Module Monitoring Processor Performance [10/2014 - 05/2019]
- DTC P060A: Internal Control Module Monitoring Processor Performance [05/2019 - ]
- DTC P060B: Internal Control Module A/D Processing Performance [10/2014 - 05/2019]
- DTC P060B: Internal Control Module A/D Processing Performance [05/2019 - ]
- DTC P060E: Internal Control Module Throttle Position Performance [10/2014 - 05/2019]
- DTC P060E: Internal Control Module Throttle Position Performance [05/2019 - ]
- DTC P062F: Internal Control Module EEPROM Error [10/2014 - 05/2019]
- DTC P062F: Internal Control Module EEPROM Error [05/2019 - ]
- DTC P0630: VIN not Programmed or Mismatch - ECM / PCM [10/2014 - 09/2015]
- DTC P0630: VIN not Programmed or Mismatch - ECM / PCM [09/2015 - ]
- DTC P0657: Actuator Supply Voltage Circuit / Open [10/2014 - 05/2019]
- DTC P0657: Actuator Supply Voltage Circuit / Open [05/2019 - ]
- DTC P106A: Evaporative Emission System Pressure Sensor - Manifold Absolute Pressure Correlation [10/2014 - 09/2016]
- DTC P106A: Evaporative Emission System Pressure Sensor - Manifold Absolute Pressure Correlation [09/2016 - 05/2018]
- DTC P106A: Evaporative Emission System Pressure Sensor - Manifold Absolute Pressure Correlation [05/2018 - ]
- DTC P1604: Startability Malfunction [10/2014 - ]
- DTC P1605: Rough Idling [10/2014 - ]
- DTC P2102: Throttle Actuator Control Motor Circuit Low; DTC P2103: Throttle Actuator Control Motor Circuit High [10/2014 - ]
- DTC P2109: Throttle / Pedal Position Sensor "A" Minimum Stop Performance [10/2014 - ]
- DTC P2111: Throttle Actuator Control System - Stuck Open; DTC P2112: Throttle Actuator Control System - Stuck Closed [10/2014 - ]
- DTC P2118: Throttle Actuator Control Motor Current Range / Performance [10/2014 - ]
- DTC P2119: Throttle Actuator Control Throttle Body Range / Performance [10/2014 - ]
- DTC P2195: Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1); DTC P2196: Oxygen (A/F) Sensor Signal Stuck Rich (Bank 1 Sensor 1) [10/2014 - ]
- DTC P219A: Bank 1 Air-Fuel Ratio Imbalance; DTC P219C: Cylinder 1 Air-Fuel Ratio Imbalance; DTC P219D: Cylinder 2 Air-Fuel Ratio Imbalance; DTC P219E: Cylinder 3 Air-Fuel Ratio Imbalance; DTC P219F: Cylinder 4 Air-Fuel Ratio Imbalance [10/2014 - 09/2015]
- DTC P219A: Bank 1 Air-Fuel Ratio Imbalance; DTC P219C: Cylinder 1 Air-Fuel Ratio Imbalance; DTC P219D: Cylinder 2 Air-Fuel Ratio Imbalance; DTC P219E: Cylinder 3 Air-Fuel Ratio Imbalance; DTC P219F: Cylinder 4 Air-Fuel Ratio Imbalance [09/2015 - ]
- DTC P2237: Oxygen (A/F) Sensor Pumping Current Circuit / Open (for A/F sensor) (Bank 1 Sensor 1); DTC P2238: Oxygen Sensor Pumping Current Circuit Low (for A/F sensor) (Bank 1 Sensor 1); DTC P2239: Oxygen Sensor Pumping Current Circuit High (for A/F sensor) (Bank 1 Sensor 1); DTC P2252: Oxygen Sensor Reference Ground Circuit Low (for A/F sensor) (Bank 1 Sensor 1); DTC P2253: Oxygen Sensor Reference Ground Circuit High (for A/F sensor) (Bank 1 Sensor 1) [10/2014 - 09/2015]
- DTC P2237: Oxygen (A/F) Sensor Pumping Current Circuit / Open (for A/F sensor) (Bank 1 Sensor 1); DTC P2238: Oxygen Sensor Pumping Current Circuit Low (for A/F sensor) (Bank 1 Sensor 1); DTC P2239: Oxygen Sensor Pumping Current Circuit High (for A/F sensor) (Bank 1 Sensor 1); DTC P2252: Oxygen Sensor Reference Ground Circuit Low (for A/F sensor) (Bank 1 Sensor 1); DTC P2253: Oxygen Sensor Reference Ground Circuit High (for A/F sensor) (Bank 1 Sensor 1) [09/2015 - ]
- DTC P2420: Evaporative Emission Pressure Switching Valve Stuck OFF [10/2014 - 05/2018]
- DTC P2420: Evaporative Emission Pressure Switching Valve Stuck OFF [05/2018 - ]
- DTC P2610: ECM / PCM Internal Engine Off Timer Performance [10/2014 - ]
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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