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.
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HOMESERVICE MANUALSTOYOTA20094RUNNER LIMITED, 4.0 U, 4WDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEM (1GR-FE)
2009 Toyota 4Runner Limited, 4.0 U, 4WD
Engine Control System (1GR-FE)
2009 Toyota 4Runner Limited, 4.0 U, 4WDSECTION Engine Control System (1GR-FE)
- SFI System
- Precaution
- Definition Of Terms
- Parts Location
- How To Proceed With Troubleshooting
- Check For Intermittent Problems
- Basic Inspection
- Registration
- Checking Monitor Status
- Readiness Monitor Drive Pattern
- Problem Symptoms Table
- Terminals Of ECM
- Diagnosis System
- DTC Check/Clear
- Freeze Frame Data
- Check Mode Procedure
- Fail-Safe
- Data List/Active Test
- Diagnostic Trouble Code Table
- DTC P0010, P0020: Camshaft Position "A" Actuator Circuit (Bank 1); Camshaft Position "A" Actuator Circuit (Bank 2)
- DTC P0011, P0012, P0021, P0022: Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1); Camshaft Position "A" - Timing Over-Retarded (Bank 1); Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 2); Camshaft Position "A" - Timing Over-Retarded (Bank 2)
- DTC P0016, P0018: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A); Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)
- DTC P0031, P0032, P0051, P0052: Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1); Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1); Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 2 Sensor 1); Oxygen (A/F) Sensor Heater Control Circuit High (Bank 2 Sensor 1)
- DTC P0037, P0038, P0057, P0058, P0141, P0161: Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 2); Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 2); Oxygen Sensor Heater Control Circuit Low (Bank 2 Sensor 2); Oxygen Sensor Heater Control Circuit High (Bank 2 Sensor 2); Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 2); Oxygen Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
- DTC P0100, P0102, P0103: Mass or Volume Air Flow Circuit; Mass or Volume Air Flow Circuit Low Input; Mass or Volume Air Flow Circuit High Input
- DTC P0101: Mass or Volume Air Flow Circuit Range/Performance Problem
- DTC P0110, P0112, P0113: Intake Air Temperature Circuit; Intake Air Temperature Circuit Low Input; Intake Air Temperature Circuit High Input
- DTC P0111: Intake Air Temperature Sensor Gradient Too High
- DTC P0115, P0117, P0118: Engine Coolant Temperature Circuit; Engine Coolant Temperature Circuit Low Input; Engine Coolant Temperature Circuit High Input
- DTC P0116: Engine Coolant Temperature Circuit Range/Performance Problem
- DTC P011B: Engine Coolant Temperature/Intake Air Temperature Correlation
- DTC P0120, P0122, P0123, P0220, P0222, P0223, P2135: Throttle/Pedal Position Sensor/Switch "A" Circuit; Throttle/Pedal Position Sensor/Switch "A" Circuit Low Input; Throttle/Pedal Position Sensor/Switch "A" Circuit High Input; Throttle/Pedal Position Sensor/Switch "B" Circuit; Throttle/Pedal Position Sensor/Switch "B" Circuit Low Input; Throttle/Pedal Position Sensor/Switch "B" Circuit High Input; Throttle/Pedal Position Sensor/Switch "A"/"B" Voltage Correlation
- DTC P0121: Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance Problem
- DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control
- DTC P0128: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
- DTC P0136 Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137 Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138 Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139 Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2); DTC P0156 Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2); DTC P0157 Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2); DTC P0158 Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2); DTC P0159 Oxygen Sensor Circuit Slow Response (Bank 2 Sensor 2)
- DTC P0171, P0172, P0174, P0175: System Too Lean (Bank 1); System Too Rich (Bank 1); System Too Lean (Bank 2); System Too Rich (Bank 2)
- DTC P0230: Fuel Pump Primary Circuit
- DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306: Random/Multiple Cylinder Misfire Detected; Cylinder 1 Misfire Detected; Cylinder 2 Misfire Detected; Cylinder 3 Misfire Detected; Cylinder 4 Misfire Detected; Cylinder 5 Misfire Detected; Cylinder 6 Misfire Detected
- DTC P0327, P0328, P0332, P0333: Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor); Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor); Knock Sensor 2 Circuit Low Input (Bank 2); Knock Sensor 2 Circuit High Input (Bank 2)
- DTC P0335, P0339: Crankshaft Position Sensor "A" Circuit; Crankshaft Position Sensor "A" Circuit Intermittent
- DTC P0340, P0342, P0343, P0345, P0347, P0348: Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor); Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor); Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor); Camshaft Position Sensor "A" Circuit (Bank 2); Camshaft Position Sensor "A" Circuit Low Input (Bank 2); Camshaft Position Sensor "A" Circuit High Input (Bank 2)
- DTC P0351, P0352, P0353, P0354, P0355, P0356: Ignition Coil "A" Primary/Secondary Circuit; Ignition Coil "B" Primary/Secondary Circuit; Ignition Coil "C" Primary/Secondary Circuit; Ignition Coil "D" Primary/Secondary Circuit; Ignition Coil "E" Primary/Secondary Circuit; Ignition Coil "F" Primary/Secondary Circuit
- DTC P0420, P0430: Catalyst System Efficiency Below Threshold (Bank 1); Catalyst System Efficiency Below Threshold (Bank 2)
- DTC P043E, P043F: Evaporative Emission System Reference Orifice Clog Up; Evaporative Emission System Reference Orifice High Flow
- DTC P0441: Evaporative Emission Control System Incorrect Purge Flow
- DTC P0443 Evaporative Emission Control System Purge Control Valve Circuit
- DTC P0450, P0451, P0452, P0453: Evaporative Emission Control System Pressure Sensor/Switch; Evaporative Emission Control System Pressure Sensor Range/Performance; Evaporative Emission Control System Pressure Sensor/Switch Low Input; Evaporative Emission Control System Pressure Sensor/Switch High Input
- DTC P0455, P0456: Evaporative Emission Control System Leak Detected (Gross Leak); Evaporative Emission Control System Leak Detected (Very Small Leak)
- DTC P0500: Vehicle Speed Sensor "A"
- DTC P0504: Brake Switch "A"/"B" Correlation
- DTC P0505: Idle Control System Malfunction
- DTC P050A, P050B: Cold Start Idle Air Control System Performance; Cold Start Ignition Timing Performance
- DTC P0560: System Voltage
- DTC P0604: Internal Control Module Random Access Memory (RAM) Error
- DTC P0606: ECM/PCM Processor
- DTC P0607: Control Module Performance
- DTC P0617: Starter Relay Circuit High
- DTC P0630: VIN not Programmed or Mismatch - ECM/PCM
- DTC P0657: Actuator Supply Voltage Circuit/Open
- DTC P0724 Brake Switch "B" Circuit High
- DTC P2102, P2103: Throttle Actuator Control Motor Circuit Low; Throttle Actuator Control Motor Circuit High
- DTC P2111, P2112: Throttle Actuator Control System - Stuck Open; Throttle Actuator Control System - Stuck Closed
- DTC P2118: Throttle Actuator Control Motor Current Range/Performance
- DTC P2119: Throttle Actuator Control Throttle Body Range/Performance
- DTC P2120, P2122, P2123, P2125, P2127, P2128, P2138: Throttle/Pedal Position Sensor/Switch "D" Circuit; Throttle/Pedal Position Sensor/Switch "D" Circuit Low Input; Throttle/Pedal Position Sensor/Switch "D" Circuit High Input; Throttle/Pedal Position Sensor/Switch "E" Circuit; Throttle/Pedal Position Sensor/Switch "E" Circuit Low Input; Throttle/Pedal Position Sensor/Switch "E" Circuit High Input; Throttle/Pedal Position Sensor/Switch "D"/"E" Voltage Correlation
- DTC P2121: Throttle/Pedal Position Sensor/Switch "D" Circuit Range/Performance
- DTC P2195, P2196, P2197, P2198: Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1); Oxygen (A/F) Sensor Signal Stuck Rich (Bank 1 Sensor 1); Oxygen (A/F) Sensor Signal Stuck Lean (Bank 2 Sensor 1); Oxygen (A/F) Sensor Signal Stuck Rich (Bank 2 Sensor 1)
- DTC P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255, P2256: Oxygen (A/F) Sensor Pumping Current Circuit/Open (Bank 1 Sensor 1); Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 1 Sensor 1); Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 1 Sensor 1); Oxygen (A/F) Sensor Pumping Current Circuit/Open (Bank 2 Sensor 1); Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 2 Sensor 1); Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 2 Sensor 1); Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 1 Sensor 1); Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 1 Sensor 1); Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 2 Sensor 1); Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 2 Sensor 1)
- DTC P2401, P2402: Evaporative Emission System Leak Detection Pump Control Circuit Low; Evaporative Emission System Leak Detection Pump Control Circuit High
- DTC P2419, P2420: Evaporative Emission System Switching Valve Control Circuit Low; Evaporative Emission System Switching Valve Control Circuit High
- DTC P2610: ECM/PCM Internal Engine Off Timer Performance
- DTC P2A00, P2A03: A/F Sensor Circuit Slow Response (Bank 1 Sensor 1); A/F Sensor Circuit Slow Response (Bank 2 Sensor 1)
- EVAP System
- Circuit Test
- Camshaft Timing Oil Control Valve Assembly
- Throttle Body
- ECM
- Accelerator Pedal Rod
- Mass Air Flow Meter
- VVT Sensor
- Crankshaft Position Sensor
- Engine Coolant Temperature Sensor
- Knock Sensor
- EFI Relay
- Circuit Opening Relay
- Fuel Pump Relay
RENDER: 1.0x
NO RELATED
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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.