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.
2018 Toyota 4Runner TRD ProFACTORY OEM SERVICE PROCEDURE
Engine Control System - Diagnostic Codes (P0560-P2121)
- SFI System
- DTC P0560: System Voltage [08/2015 - 08/2019]
- DTC P0560: System Voltage [08/2019 - ]
- DTC P0604: Internal Control Module Random Access Memory (RAM) Error [08/2015 - ]
- DTC P0606: ECM / PCM Processor [08/2015 - ]
- DTC P0607: Control Module Performance [08/2015 - ]
- DTC P060A: Internal Control Module Monitoring Processor Performance [08/2015 - ]
- DTC P060B: Internal Control Module A/D Processing Performance [08/2015 - 08/2019]
- DTC P060B: Internal Control Module A/D Processing Performance [08/2019 - ]
- DTC P060D: Internal Control Module Accelerator Pedal Position Performance [08/2015 - ]
- DTC P060E: Internal Control Module Throttle Position Performance [08/2015 - ]
- DTC P0617: Starter Relay Circuit High [08/2015 - 12/2016]
- DTC P0617: Starter Relay Circuit High [12/2016 - 08/2019]
- DTC P0617: Starter Relay Circuit High [08/2019 - 08/2022]
- DTC P0617: Starter Relay Circuit High [08/2022 - ]
- DTC P062F: Internal Control Module EEPROM Error [08/2015 - ]
- DTC P0630: VIN not Programmed or Mismatch - ECM / PCM [08/2015 - ]
- DTC P0657: Actuator Supply Voltage Circuit / Open [08/2015 - ]
- DTC P0724: Brake Switch "B" Circuit High [08/2015 - 08/2019]
- DTC P0724: Brake Switch "B" Circuit High [08/2019 - ]
- DTC P106B: Evaporative Emission System Pressure Sensor - Secondary Air Injection Pressure Sensor Correlation [08/2015 - ]
- DTC P144C: Open in Secondary Air Injection System Heater Control Circuit; DTC P144D: Short in Secondary Air Injection System Heater Control Circuit [08/2015 - 08/2019]
- DTC P144C: Open in Secondary Air Injection System Heater Control Circuit; DTC P144D: Short in Secondary Air Injection System Heater Control Circuit [08/2019 - ]
- DTC P1603: Engine Stall History [08/2015 - 08/2019]
- DTC P1603: Engine Stall History [08/2019 - ]
- DTC P1604: Startability Malfunction [08/2015 - 08/2022]
- DTC P1604: Startability Malfunction [08/2022 - ]
- DTC P1605: Rough Idling [08/2015 - ]
- DTC P1607: Cruise Control Input Processor [08/2015 - ]
- DTC P1613: Secondary Air Injection Driver Malfunction [08/2015 - 08/2019]
- DTC P1613: Secondary Air Injection Driver Malfunction [08/2019 - ]
- DTC P2102: Throttle Actuator Control Motor Circuit Low; DTC P2103: Throttle Actuator Control Motor Circuit High [08/2015 - 08/2019]
- DTC P2102: Throttle Actuator Control Motor Circuit Low; DTC P2103: Throttle Actuator Control Motor Circuit High [08/2019 - ]
- DTC P2109: Throttle / Pedal Position Sensor "A" Minimum Stop Performance [08/2015 - 08/2019]
- DTC P2109: Throttle / Pedal Position Sensor "A" Minimum Stop Performance [08/2019 - ]
- DTC P2111: Throttle Actuator Control System - Stuck Open; DTC P2112: Throttle Actuator Control System - Stuck Closed [08/2015 - ]
- DTC P2118: Throttle Actuator Control Motor Current Range / Performance [08/2015 - 08/2019]
- DTC P2118: Throttle Actuator Control Motor Current Range / Performance [08/2019 - ]
- DTC P2119: Throttle Actuator Control Throttle Body Range / Performance [08/2015 - ]
- DTC P2120: Throttle / Pedal Position Sensor / Switch "D" Circuit; DTC P2122: Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input; DTC P2123: Throttle / Pedal Position Sensor / Switch "D" Circuit High Input; DTC P2125: Throttle / Pedal Position Sensor / Switch "E" Circuit; DTC P2127: Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input; DTC P2128: Throttle / Pedal Position Sensor / Switch "E" Circuit High Input; DTC P2138: Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation [08/2015 - 08/2019]
- DTC P2120: Throttle / Pedal Position Sensor / Switch "D" Circuit; DTC P2122: Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input; DTC P2123: Throttle / Pedal Position Sensor / Switch "D" Circuit High Input; DTC P2125: Throttle / Pedal Position Sensor / Switch "E" Circuit; DTC P2127: Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input; DTC P2128: Throttle / Pedal Position Sensor / Switch "E" Circuit High Input; DTC P2138: Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation [08/2019 - ]
- DTC P2121: Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance [08/2015 - ]
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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