2UZ-FE ENGINE CONTROL SYSTEM ES–53 - …4runnerclub.com/i/4r_files/fsm/ToyManuals-2007-4Runner/...ES–56 2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES P0123 Throttle / Pedal Position

2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–53

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DIAGNOSTIC TROUBLE CODE CHARTHINT:The parameters listed in the chart are for reference only. Factors such as instrument type may cause readings to differ slightly from stated values. If any DTCs are displayed during a check mode DTC check, check the circuit for the DTCs listed in the table below. For details of each DTC, refer to the page indicated.

2UZ-FE SFI SYSTEMDTC Code Detection Item Trouble Area MIL Memory See page

P0010 Camshaft Position "A" Actuator Circuit (Bank 1)

1. Open or short in Oil Control Valve (OCV) (bank 1) circuit2. Oil Control Valve (OCV) (bank 1)3. ECM

Comes on DTC stored ES-66

P0011 Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1)

1. Oil Control Valve (OCV)2. Valve timing3. VVT controller assembly4. ECM


P0012 Camshaft Position "A" - Timing Over-Retarded (Bank 1)

Same as P0011 Comes on DTC stored ES-71

P0016 Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)

1. Open or short in VVT sensor circuit2. VVT sensor3. ECM


P0018 Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)


P0020 Camshaft Position "A" Actuator Circuit (Bank 2)

1. Open or short in OCV (bank 2) circuit2. OCV (bank 2)3. ECM


P0021 Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 2)


P0022 Camshaft Position "A" - Timing Over-Retarded (Bank 2)


P0031 Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1)

1. Open in Air Fuel Ratio (A/F) sensor (bank 1 sensor 1) heater circuit2. Air Fuel Ratio (A/F)sensor heater (bank 1 sensor 1)3. A/F relay4. ECM


P0032 Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1)

1. Short in A/F sensor (bank 1 sensor 1) heater circuit2. A/F sensor heater (bank 1 sensor 1)3. A/F relay4. ECM


ES–54 2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM

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P0037 Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 2)

1. Open in Heated Oxygen (HO2) sensor heater circuit2. Heated Oxygen (HO2) sensor heater (bank 1 sensor 2)3. EFI relay4. ECM


P0038 Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 2)

1. Short in HO2 sensor heater circuit2. HO2 sensor heater (bank 1 sensor 2)3. EFI relay4. ECM


P0051 Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 2 Sensor 1)

1. Open in A/F sensor (bank 2 sensor 1) heater circuit2. A/F sensor heater (bank 2 sensor 1)3. A/F relay4. ECM


P0052 Oxygen (A/F) Sensor Heater Control Circuit High (Bank 2 Sensor 1)

1. Short in A/F sensor (bank 2 sensor 1) heater circuit2. A/F sensor heater (bank 2 sensor 1)3. A/F relay4. ECM


P0057 Oxygen Sensor Heater Control Circuit Low (Bank 2 Sensor 2)

1. Open in HO2 sensor heater circuit2. HO2 sensor heater (bank 2 sensor 2)3. EFI relay4. ECM


P0058 Oxygen Sensor Heater Control Circuit High (Bank 2 Sensor 2)

1. Short in HO2 sensor heater circuit2. HO2 sensor heater (bank 2 sensor 2)3. EFI relay4. ECM


P0100 Mass Air Flow Circuit Malfunction

1. Open or short in Mass Air Flow (MAF) meter circuit2. Mass Air Flow (MAF) meter3. ECM


P0101 Mass Air Flow Circuit Range / Performance Problem

Mass Air Flow (MAF) meter


P0102 Mass Air Flow Circuit Low



P0103 Mass Air Flow Circuit High



DTC Code Detection Item Trouble Area MIL Memory See page


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P0110 Intake Air Temperature Circuit

1. Open or short in Intake Air Temperature (IAT) sensor circuit2. Intake Air Temperature (IAT) sensor (built into MAF meter)3. ECM


P0111 Intake Air Temperature Sensor Gradient Too High

Mass air flow meter Comes on DTC stored ES-107

P0112 Intake Air Temperature Circuit Low Input

1. Short in IAT sensor circuit2. IAT sensor (built into MAF meter)3. ECM


P0113 Intake Air Temperature Circuit High Input

1. Open in IAT sensor circuit2. IAT sensor (built into MAF meter)3. ECM


P0115 Engine Coolant Temperature Circuit

1. Open or short in Engine Coolant Temperature (ECT) sensor circuit2. Engine Coolant Temperature (ECT) sensor3. ECM


P0116 Engine Coolant Temperature Circuit Range / Performance Problem

Engine Coolant Temperature (ECT) sensor


P0117 Engine Coolant Temperature Circuit Low Input

1. Short in ECT sensor circuit2. ECT sensor3. ECM


P0118 Engine Coolant Temperature Circuit High Input

1. Open in ECT sensor circuit2. ECT sensor3. ECM


P0120 Throttle / Pedal Position Sensor / Switch "A" Circuit

1. Throttle Position (TP) sensor (built into throttle body)2. ECM


P0121 Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem

Throttle Position (TP) sensor (built into throttle body)


P0122 Throttle / Pedal Position Sensor / Switch "A" Circuit Low Input

1. Throttle Position (TP) sensor (built into throttle body)2. Short in VTA1 circuit3. Open in VC circuit4. ECM




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P0123 Throttle / Pedal Position Sensor / Switch "A" Circuit High Input

1. Throttle Position (TP) sensor (built into throttle body)2. Open in VTA1 circuit3. Open in E2 circuit4. Short between VC and VTA1 circuits5. ECM


P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control

1. Cooling system2. Engine Coolant Temperature (ECT) sensor3. Thermostat


P0128 Thermostat Malfunction

1. Thermostat2. Cooling system3. Engine Coolant Temperature (ECT) sensor4. ECM


P0136 Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2)

1. Open or short in Heated Oxygen (HO2) sensor circuit2. Heated Oxygen (HO2) sensor (bank 1 sensor 2)3. Heated Oxygen (HO2) sensor heater (bank 1 sensor 2)4. Air Fuel Ratio (A/F) sensor (bank 1 sensor 1)5. EFI relay6. Gas leakage from exhaust system


P0137 Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2)

1. Open in HO2 sensor (bank 1 sensor 2) circuit2. HO2 sensor (bank 1 sensor 2)3. HO2 sensor heater (bank 1 sensor 2)4. EFI relay5. Gas leakage from exhaust system


P0138 Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2)

1. Short in HO2 sensor (bank 1 sensor 2) circuit2. HO2 sensor (bank 1 sensor 2)3. ECM internal circuit malfunction


P0141 Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

1. Open or short in HO2 sensor heater circuit2. HO2 sensor heater (bank 1 sensor 2)3. EFI relay4. ECM




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P0156 Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2)

1. Open or short in HO2 sensor (bank 2 sensor 2) circuit2. HO2 sensor (bank 2 sensor 2)3. HO2 sensor heater (bank 2 sensor2)4. A/F sensor (bank 2 sensor 1)5. EFI relay6. Gas leakage from exhaust system


P0157 Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2)

1. Open in HO2 sensor (bank 2 sensor 2) circuit2. HO2 sensor (bank 2 sensor 2)3. HO2 sensor heater (bank 2 sensor 2)4. EFI relay5. Gas leakage from exhaust system


P0158 Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2)

1. Short in HO2 sensor (bank 2 sensor 2) circuit2. HO2 sensor (bank 2 sensor 2)3. ECM internal circuit malfunction


P0161 Oxygen Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)

1. Open or short in HO2 sensor heater circuit2. HO2 sensor heater (bank 2 sensor 2)3. EFI relay4. ECM


P0171 System Too Lean (Bank 1)

1. Air induction system2. Injector blockage3. Mass Air Flow (MAF) meter4. Engine Coolant Temperature (ECT) sensor5. Fuel pressure6. Gas leakage in exhaust system7. Open or short in HO2 sensor (bank 1 sensor 1) circuit8. HO2 sensor (bank 1 sensor 1)9. HO2 sensor heater (bank 1 sensor 1)10. EFI relay11. PCV piping13. ECM




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P0172 System Too Rich (Bank 1)

1. Injector leakage or blockage2. MAF meter3. ECT sensor4. Ignition system5. Fuel pressure6. Gas leakage in exhaust system7. Open or short in HO2 sensor (bank 1 sensor 1) circuit8. HO2 sensor (bank 1 sensor 1)9. ECM


P0174 System Too Lean (Bank 2)

1. Air Induction system2. Injector blockage3. MAF meter4. ECT sensor5. Fuel pressure6. Gas leakage in exhaust system7. Open or short in HO2 sensor (bank 2 sensor 1)circuit8. HO2 sensor (bank 2 sensor 1)9. HO2 sensor heater (bank 2 sensor 1)10. EFI relay11. PCV piping12. ECM


P0175 System Too Rich (Bank 2)

1. Injector leakage or blockage2. MAF meter3. ECT sensor4. Ignition system5. Fuel pressure6. Gas leakage in exhaust system7. Open or short in exhaust system (bank 2 sensor 1) circuit8. HO2 sensor (bank 2 sensor 1)9. ECM


P0220 Throttle / Pedal Position Sensor / Switch "B" Circuit

1. Throttle Position (TP) sensor (built into throttle body)2. ECM


P0222 Throttle / Pedal Position Sensor / Switch "B" Circuit Low Input

1. Throttle Position (TP) sensor (built into throttle body)2. Short in VTA2 circuit3. Open in VC circuit4. ECM


P0223 Throttle / Pedal Position Sensor / Switch "B" Circuit High Input

1. Throttle Position (TP) sensor (built into throttle body)2. Open in VTA2 circuit3. Open in E2 circuit4. Short between VC and VTA2 circuits5. ECM




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P0230 Fuel Pump Primary Circuit

1. Open or short in fuel pump relay circuit2. Fuel pump relay3. Circuit opening relay4. Fuel pump5. ECM

- DTC stored ES-168

P0300 Random / Multiple Cylinder Misfire Detected

1. Open or short in engine wire harness2. Connector connection3. Vacuum hose connection4. Ignition system5. Fuel injector6. Fuel pressure7. Mass Air Flow (MAF) meter8. Engine Coolant Temperature (ECT) sensor9. Compression pressure10. Valve clearance11. Valve timing12. PCV hose connection13. PCV hose14. ECM

Comes on or blinks DTC stored ES-173

P0301 Cylinder 1 Misfire Detected

Same as P0300 Comes on or blinks DTC stored ES-173















P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)

1. Short in knock sensor 1 circuit2. Knock sensor 13. ECM


P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)

1. Open in knock sensor 1 circuit2. Knock sensor 13. ECM


P0332 Knock Sensor 2 Circuit Low Input (Bank 2)

1. Short in knock sensor 2 circuit2. Knock sensor 23. ECM


P0333 Knock Sensor 2 Circuit High Input (Bank 2)

1. Open in knock sensor 2 circuit2. Knock sensor 23. ECM




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P0335 Crankshaft Position Sensor "A" Circuit

1. Open or short in Crankshaft Position (CKP) sensor circuit2. Crankshaft Position (CKP) sensor3. Signal plate (crankshaft position sensor plate)4. ECM


P0339 Crankshaft Position Sensor "A" Circuit Intermittent

1. Open or short in Crankshaft Position (CKP) sensor circuit2. Crankshaft Position (CKP) sensor3. Signal plate (crankshaft position sensor plate)4. ECM

- DTC stored ES-193

P0340 Camshaft Position Sensor Circuit Malfunction

1. Open or short in camshaft position sensor circuit2. Camshaft position sensor3. Bank 1 camshaft timing pulley4. Timing belt has a jumped tooth5. ECM


P0341 Camshaft Position Sensor "A" Circuit Range / Performance (Bank 1 or Single Sensor)


P0345 Camshaft Position Sensor "A" Circuit (Bank 2)


P0346 Camshaft Position Sensor "A" Circuit Range / Performance (Bank 2)

Same as P0340. Comes on DTC stored ES-198

P0351 Ignition Coil "A" Primary / Secondary Circuit

1. Open or short in IGF1 or IGT1 circuit between No. 1 ignition coil and ECM2. No. 1 ignition coil (primary ignition)3. Ignition system4. ECM


P0352 Ignition Coil "B" Primary / Secondary Circuit



P0353 Ignition Coil "C" Primary / Secondary Circuit





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P0354 Ignition Coil "D" Primary / Secondary Circuit



P0355 Ignition Coil "E" Primary / Secondary Circuit



P0356 Ignition Coil "F" Primary / Secondary Circuit



P0357 Ignition Coil "G" Primary / Secondary Circuit



P0358 Ignition Coil "H" Primary / Secondary Circuit



P0412 Secondary Air Injection System Switching Valve "A" Circuit

1. Open in air switching valve drive circuit2. Short between air switching valve circuit and +B circuit3. Short between air switching valve circuit and body ground4. Air injection control driver5. Air switching valve6. ECM


P0418 Secondary Air Injection System Control "A" Circuit

1. Open in air pump drive circuit2. Short between air pump circuit and +B circuit3. Short between air pump circuit and body ground4. Air injection control driver5. ECM




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P0420 Catalyst System Efficiency Below Threshold (Bank 1)

1. Gas leakage from exhaust system2. Air Fuel Ratio (A/F) sensor (bank 1 sensor 1)3. Heated Oxygen (HO2) sensor (bank 1 sensor 2)4. Three-way catalytic converter


P0430 Catalyst System Efficiency Below Threshold (Bank 2)

1. Gas leakage on exhaust system2. A/F sensor (bank 2 sensor 1)3. HO2 sensor (bank 2 sensor 2)4. Three-way catalytic converter


P043E Evaporative Emission System Leak Detection Reference Orifice Low Flow

1. Pump module2. Connector/Wire harness (Pump module - ECM)3. ECM4. Leakage from EVAP system


P043F Evaporative Emission System Reference Orifice High Flow

1. Pump module2. Connector/Wire harness (Pump module - ECM)3. ECM4. Leakage from EVAP system


P0441 Evaporative Emission Control System Incorrect Purge Flow

1. Purge VSV2. Connector/Wire harness (Purge VSV - ECM)3. ECM4. Pump module5. Leakage from EVAP system


P0450 Evaporative Emission Control System Pressure Sensor Malfunction

1. Canister pump module2. Connector/Wire harness (Pump module - ECM)3. ECM


P0451 Evaporative Emission Control System Pressure Sensor Range / Performance

1. Pump module2. Connector/Wire harness (Pump module - ECM)3. ECM


P0452 Evaporative Emission Control System Pressure Sensor / Switch Low Input



P0453 Evaporative Emission Control System Pressure Sensor / Switch High Input





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P0455 Evaporative Emission Control System Leak Detected (Gross Leak)

1. Fuel cap (loose)2. Leakage from EVAP line (Canister - Fuel tank)3. Leakage from EVAP line (Purge VSV - canister)4. Pump module5. Leakage from fuel tank6. Leakage from canister


P0456 Evaporative Emission Control System Leak Detected (Very Small Leak)


P0500 Vehicle Speed Sensor "A"

1. Combination meter2. Open or short in vehicle speed sensor circuit3. Vehicle speed sensor4. Skid control ECU5. ECM


P0503 Vehicle Speed Sensor "A" Intermittent / Erratic / High

1. Combination meter2. Open or short in vehicle speed sensor circuit3. Vehicle speed sensor4. Skid control ECU5. ECM

- DTC stored ES-263

P0504 Brake Switch "A" / "B" Correlation

1. Short in stop light switch signal circuit2. Stop light fuse3. Stop light switch assembly4. ECM

- DTC stored ES-266

P0505 Idle Control System Malfunction

1. ECTS2. Air induction system3. Ventilation hose connection4. ECM


P050A Cold Start Idle Air Control System Performance

1. ETCS2. MAF meter3. Air induction system4. Ventilation hose connections5. ECM


P050B Cold Start Ignition Timing Performance

1. Throttle body2. MAF meter3. Air induction system4. Ventilation hose connections5. VVT system6. ECM


P0560 System Voltage 1. Open in back-up power source circuit2. EFI fuse3. ECM


P0604 Random Access Memory (RAM)

ECM Comes on DTC stored ES-284



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P0606 ECM / PCM Processor

1. Exhaust gas leak2. Heated oxygen sensor3. ECM

Comes on/- DTC stored ES-285

P0607 Control Module Performance


P0617 Starter Relay Circuit High

1. Starter relay circuit2. Park/Neutral position switch3. Ignition switch4. ECM


P0630 VIN not Programmed or Mismatch - ECM / PCM


P0657 Actuator Supply Voltage Circuit / Open


P1340 Camshaft Position Sensor "A" (Bank 1 Sensor 2)

1. Open or short in camshaft position sensor circuit2. Camshaft position sensor3. Camshaft timing pulley LH4. ECM


P1341 Camshaft Position Sensor "A" (Bank 1 Sensor 2 )

1. Open or short in camshaft position sensor circuit2. Camshaft position sensor3. Camshaft timing pulley LH4. ECM


P1440 Secondary Air Injection Vacuum Switching Valve Circuit Malfunction Bank 1

1. Open or short in VSV for air injection system (bank 1)2. VSV power source3. VSV for air injection system (bank 1)4. ECM


P1441 Stuck Open in Secondary Air Injection Vacuum Switching Valve Bank 1

1. VSV for air injection system (bank 1)2. No. 2 air switching valve (bank 1)3. VSV for air injection system (bank 1)4. ECM




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P1442 Stuck Close in Secondary Air Injection Vacuum Switching Valve Bank 1

1. VSV for air injection system circuit (bank 1)2. Vacuum hose (VSV for air injection system - No. 2 air switching valve)3. Air injector pipe (No. 2 air switching valve - exhaust manifold)4. No. 2 air switching valve (bank 1)5. VSV for air injection system (bank 1)6. ECM


P1443 Secondary Air Injection Vacuum Switching Valve Circuit Malfunction Bank 2

1. Open or short in VSV for air injection system circuit (bank 2)2. VSV power source3. VSV for air injection system (bank 2)4. ECM


P1444 Stuck Open in Secondary Air Injection Vacuum Switching Valve Bank 2

1. VSV for air injection system circuit (bank 2)2. No. 2 air switching valve (bank 2)3. VSV for air injection system (bank 2)4. ECM


P1445 Stuck Close in Secondary Air Injection Vacuum Switching Valve Bank 2

1. VSV for air injection system circuit (bank 2)2. Vacuum hose (VSV for air injection system - No. 2 air switching valve)3. Air injection pipe (No. 2 air switching valve - exhaust manifold)4. No. 2 air switching valve (bank 2)5. VSV for air injection system (bank 2)6. ECM




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P1613 Secondary Air Injection Driver Malfunction

1. Air injection control driver (AID)2. Open in air injection control driver ground circuit3. Short in diagnostic information signal circuit (AID - ECM)4. Open or short in air pump and air switching valve command signal circuit (AID - ECM)5. Open or short in AID power source circuit6. ECM


P2102 Throttle Actuator Control Motor Circuit Low

1. Open in throttle actuator circuit2. Throttle actuator3. ECM


P2103 Throttle Actuator Control Motor Circuit High

1. Short in throttle actuator circuit2. Throttle actuator3. Throttle valve4. Throttle body5. ECM


P2111 Throttle Actuator Control System - Stuck Open

1. Throttle actuator2. Throttle valve3. Throttle body


P2112 Throttle Actuator Control System - Stuck Closed


P2118 Throttle Actuator Control Motor Current Range / Performance

1. Open in ETCS power source circuit2. ETCS fuse3. ECM


P2119 Throttle Actuator Control Throttle Body Range / Performance

1. ETCS2. ECM


P2120 Throttle / Pedal Position Sensor / Switch "D" Circuit

1. Accelerator pedal position (APP) sensor2. ECM


P2121 Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance

1. APP sensor2. ECM


P2122 Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input

1. APP sensor2. Open in VCPA circuit3. Open or ground short VPA circuit4. ECM


P2123 Throttle / Pedal Position Sensor / Switch "D" Circuit High Input

1. APP sensor2. Open in EPA circuit3. ECM


P2125 Throttle / Pedal Position Sensor / Switch "E" Circuit

1. APP sensor2. ECM




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P2127 Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input

1. APP sensor2. Open in VCP2 circuit3. Open or ground short VPA2 circuit4. ECM


P2128 Throttle / Pedal Position Sensor / Switch "E" Circuit High Input

1. APP sensor2. Open in EPA2 circuit3. ECM


P2135 Throttle / Pedal Position Sensor / Switch "A" / "B" Voltage Correlation

1. Short between VTA1 and VTA2 circuit2. Throttle Position (TP) sensor (built into throttle body)3. ECM


P2138 Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation

1. Short between VPA and VPA2 circuit2. APP sensor3. ECM


P2195 Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1)

1. Open or short in Air Fuel Ratio (A/F) sensor (bank 1 sensor 1) circuit2. Air Fuel Ratio (A/F) sensor (bank 1 sensor 1)3. Air Fuel Ratio (A/F) sensor heater (bank 1 sensor 1)4. A/F heater relay5. A/F sensor heater and relay circuits6. Air induction system7. Fuel pressure8. Fuel injector9. ECM


P2196 Oxygen (A/F) Sensor Signal Stuck Rich (Bank 1 Sensor 1)


P2197 Oxygen (A/F) Sensor Signal Stuck Lean (Bank 2 Sensor 1)

1. Open or short in A/F sensor (bank 2 sensor 1) circuit2. A/F sensor (bank 2 sensor 1)3. A/F sensor heater (bank 2 sensor 1)4. A/F relay5. A/F sensor heater and relay circuits6. Air induction system7. Fuel pressure8. Fuel injector9. ECM


P2198 Oxygen (A/F) Sensor Signal Stuck Rich (Bank 2 Sensor 1)


P2237 Oxygen (A/F) Sensor Pumping Current Circuit / Open (Bank 1 Sensor 1)

1. Open or short in A/F sensor (bank 1 sensor 1) circuit2. A/F sensor (bank 1 sensor 1)3. ECM




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P2238 Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 1 Sensor 1)

1. Open or short in Air Fuel Ratio (A/F) sensor (bank 1 sensor 1) circuit2. Air Fuel Ratio (A/F) sensor (bank 1 sensor 1)3. Air Fuel Ratio (A/F) sensor heater (bank 1 sensor 1)4. A/F heater relay5. A/F sensor heater and relay circuits6. ECM


P2239 Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 1 Sensor 1)


P2240 Oxygen (A/F) Sensor Pumping Current Circuit / Open (Bank 2 Sensor 1)



P2241 Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 2 Sensor 1)

1. Open or short in A/F sensor (bank 2 sensor 1)circuit2. A/F sensor (bank 2 sensor 1)3. A/F sensor heater (bank 2 sensor 1)4. A/F relay5. A/F sensor heater and relay circuit6. ECM


P2242 Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 2 Sensor 1)


P2252 Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 1 Sensor 1)


P2253 Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 1 Sensor 1)


P2255 Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 2 Sensor 1)


P2256 Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 2 Sensor 1)


P2401 Evaporative Emission Leak Detection Pump Stuck OFF

1. Canister pump module2. Connector/Wire harness (Canister pump module - ECM)3. ECM




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P2402 Evaporative Emission Leak Detection Pump Stuck ON



P2419 Evaporative Emission Pressure Switching Valve Stuck ON



P2420 Evaporative Emission Pressure Switching Valve Stuck OFF



P2430 Secondary Air Injection System Air Flow / Pressure Sensor Circuit Bank1

1. Pressure sensor2. Open or short in pressure sensor circuit3. ECM


P2431 Secondary Air Injection System Air Flow / Pressure Sensor Circuit Range / Performance Bank1



P2432 Secondary Air Injection System Air Flow / Pressure Sensor Circuit Low Bank1



P2433 Secondary Air Injection System Air Flow / Pressure Sensor Circuit High Bank1



P2440 Secondary Air Injection System Switching Valve Stuck Open Bank1

1. Air switching valve2. No. 2 air switching valve (bank 1 and/or 2)3. VSV for air injection system (bank 1 and/or 2)4. Air injection control driver5. Air injection control driver circuit6. ECM




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P2441 Secondary Air Injection System Switching Valve Stuck Close Bank1

1. Vacuum hoses (Throttle body - VSVs for air injection system)2. Air switching valve3. Air injection pipe (No. 2 air switching valve - exhaust manifold)4. Air injection hose5. No. 2 air switching valve (bank 1 and/or 2)6. VSV for air injection system (bank 1 and/or 2)7. Air injection control driver8. Air injection control driver circuit9. ECM


P2444 Secondary Air Injection System Pump Stuck On Bank1

1. Short in air pump circuit2. Pressure sensor3. Air injection control driver4. Open or short in pressure sensor circuit5. ECM


P2445 Secondary Air Injection System Pump Stuck Off Bank1

1. Air pump fuse2. Vacuum hose3. Air pump assembly4. Air injection control driver5. Open in air pump circuit6. Air injection system piping7. Pressure sensor8. Open or short in pressure sensor circuit9. ECM


P2610 ECM / PCM Internal Engine Off Timer Performance


P2A00 A/F Sensor Circuit Slow Response (Bank 1 Sensor 1)

1. Open or short in Air Fuel Ratio (A/F) sensor (bank 1 sensor 1) circuit2. Air Fuel Ratio (A/F) sensor (bank 1 sensor 1)3. ECM


P2A03 A/F Sensor Circuit Slow Response (Bank 2 Sensor 1)




Documents

2UZ-FE ENGINE CONTROL SYSTEM ES–53 - …4runnerclub.com/i/4r_files/fsm/ToyManuals-2007-4Runner/...ES–56 2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES P0123 Throttle / Pedal Position