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.
2000 Infiniti G20 Base, Automatic, RE4F03WFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Identification
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (G20)
| DTC | System/Circuit Affected | ||||||
|---|---|---|---|---|---|---|---|
| P0000 | No Malfunction/Normal Condition | ||||||
| P0100 | Mass Airflow (MAF) Sensor/Circuit | ||||||
| P0105 | Absolute Pressure (AP) Sensor/Circuit | ||||||
| P0110 | Intake Air Temp. (IAT) Sensor/Circuit | ||||||
| P0115 | Engine Coolant Temp. (ECT) Sensor/Circuit | ||||||
| P0120 | Throttle Position (TP) Sensor/Circuit | ||||||
| P0125 | Engine Coolant Temp. (ECT) Sensor/Circuit | ||||||
| P0130 | Front HO2S (Circuit) | ||||||
| P0131 | Front HO2S (Lean Shift) | ||||||
| P0132 | Front HO2S (Rich Shift) | ||||||
| P0133 | Front HO2S (Response Time) | ||||||
| P0134 | Front HO2S (High Voltage) | ||||||
| P0135 | Front HO2S Heater | ||||||
| P0137 | Rear HO2S (Minimum Voltage) | ||||||
| P0138 | Rear HO2S (Maximum Voltage) | ||||||
| P0139 | Rear HO2S (Response Time) | ||||||
| P0140 | Rear HO2S (High Voltage) | ||||||
| P0141 | Rear HO2S Heater | ||||||
| P0171 | Fuel System Lean | ||||||
| P0172 | Fuel System Rich | ||||||
| P0180 | Fuel Tank Temp. (FTT) Sensor/Circuit | ||||||
| P0217 | Engine Coolant Overtemperature Enrichment | ||||||
| P0300 | Multiple Cylinder Misfire | ||||||
| P0301 | Cylinder No. 1 Misfire | ||||||
| P0302 | Cylinder No. 2 Misfire | ||||||
| P0303 | Cylinder No. 3 Misfire | ||||||
| P0304 | Cylinder No. 4 Misfire | ||||||
| P0325 (1) | Knock Sensor/Circuit | ||||||
| P0335 | Crankshaft Position (CKP) Sensor/Circuit | ||||||
| P0340 | Camshaft Position (CMP) Sensor/Circuit | ||||||
| P0400 | EGR Function (Closed) | ||||||
| P0403 | EGR Volume Control Valve/Circuit | ||||||
| P0420 | Three-Way Catalyst Function | ||||||
| P0440 | EVAP Small Leak (Negative Pressure) | ||||||
| P0443 | EVAP Canister Purge Volume Control Valve/Circuit | ||||||
| P0446 | EVAP Canister Vent Control Valve/Circuit | ||||||
| P0450 | EVAP Control System Pressure Sensor | ||||||
| P0455 | EVAP Large Leak | ||||||
| P0460 | Fuel Level Sensor Function (Slosh) | ||||||
| P0461 | Fuel Level Sensor Function | ||||||
| P0464 | Fuel Level Sensor Circuit | ||||||
| P0500 | Vehicle Speed Sensor (VSS) | ||||||
| P0505 | Idle Air Control Valve-Auxiliary Air Control (IACV-AAC) Valve | ||||||
| P0510 | Closed Throttle Position (TP) Switch | ||||||
| P0600 (2) | A/T Control | ||||||
| P0605 | ECM | ||||||
| P0705 | (3) Park/Neutral Position (PNP) Switch/Circuit | ||||||
| P0710 | (3) A/T Fluid Temperature Sensor | ||||||
| P0720 | (3) Vehicle Speed Sensor | ||||||
| P0725 | (3) Engine Speed Signal | ||||||
| P0731 | (3) 1st Gear Function | ||||||
| P0732 | (3) 2nd Gear Function | ||||||
| P0733 | (3) 3rd Gear Function | ||||||
| P0734 | (3) 4th Gear Function | ||||||
| P0740 | (3) Torque Converter Clutch (TCC) Solenoid/Circuit | ||||||
| P0744 | (3) TCC Solenoid Function | ||||||
| P0745 | (3) Line Pressure Solenoid/Circuit | ||||||
| P0750 | (3) Shift Solenoid A | ||||||
| P0755 | (3) Shift Solenoid B | ||||||
| P1126 | Thermostat Function | ||||||
| P1148 | Closed Loop Control | ||||||
| P1217 | Engine Overheat | ||||||
| P1320 | Ignition Signal | ||||||
| P1336 | Crankshaft Position Sensor | ||||||
| P1401 | EGR Temperature Sensor | ||||||
| P1402 | EGR Function (Open) | ||||||
| P1440 | EVAP Small Leak (Positive Pressure) | ||||||
| P1444 | EVAP Canister Purge Volume Control Valve | ||||||
| P1446 | EVAP Vent Control Valve (Close) | ||||||
| P1447 | EVAP Purge Flow Monitor | ||||||
| P1448 | EVAP Vent Control Valve (Open) | ||||||
| P1464 | Fuel Level Sensor Circuit (Ground Signal) | ||||||
| P1490 | Vacuum Cut Valve By-Pass Valve (Circuit) | ||||||
| P1491 | Vacuum Cut Valve By-Pass Valve | ||||||
| P1605 | A/T Diagnosis Communication Line | ||||||
| P1705 | (3) Throttle Position (TP) Sensor/Circuit | ||||||
| P1706 | Park/Neutral Position (PNP) Switch/Circuit | ||||||
| P1760 | (3) Overrun Clutch Solenoid/Circuit | ||||||
|
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DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (Q45)
| Scan Tool DTC/MIL DTC | System/Circuit Affected | ||||||
|---|---|---|---|---|---|---|---|
| P0000/0505 | No Malfunction/Normal Condition | ||||||
| P0100/0102 | Mass Air Flow (MAF) Sensor/Circuit | ||||||
| P0105/0803 | Absolute Pressure (AP) Sensor/Circuit | ||||||
| P0110/0401 | Intake Air Temperature (IAT) Sensor/Circuit | ||||||
| P0115/0103 | Engine Coolant Temperature (ECT) Sensor/Circuit | ||||||
| P0120/0403 | Throttle Position (TP) Sensor/Circuit | ||||||
| P0125/0908 | Engine Coolant Temperature (ECT) Sensor/Circuit | ||||||
| P0130/0303 | Left Front HO2S (Circuit) | ||||||
| P0131/0411 | Left Front HO2S (Lean Shift) | ||||||
| P0132/0410 | Left Front HO2S (Rich Shift) | ||||||
| P0133/0409 | Left Front HO2S (Response Time) | ||||||
| P0134/0412 | Left Front HO2S (High Voltage) | ||||||
| P0135/0901 | Left Front HO2S Heater | ||||||
| P0137/0511 | Left Rear HO2S (Minimum Voltage) | ||||||
| P0138/0510 | Left Rear HO2S (Maximum Voltage) | ||||||
| P0139/0707 | Left Rear HO2S (Response Time) | ||||||
| P0140/0512 | Left Rear HO2S (High Voltage) | ||||||
| P0141/0902 | Left Rear HO2S Heater | ||||||
| P0150/0503 | Right Front HO2S (Circuit) | ||||||
| P0151/0415 | Right Front HO2S (Lean Shift) | ||||||
| P0152/0414 | Right Front HO2S (Rich Shift) | ||||||
| P0153/0413 | Right Front HO2S (Response Time) | ||||||
| P0154/0509 | Right Front HO2S (High Voltage) | ||||||
| P0155/1001 | Right Front HO2S Heater | ||||||
| P0157/0314 | Right Rear HO2S (Minimum Voltage) | ||||||
| P0158/0313 | Right Rear HO2S (Maximum Voltage) | ||||||
| P0159/0708 | Right Rear HO2S (Response Time) | ||||||
| P0160/0315 | Right Rear HO2S (High Voltage) | ||||||
| P0161/1002 | Right Rear HO2S Heater | ||||||
| P0171/0115 | Fuel System Lean-Left Bank | ||||||
| P0172/0114 | Fuel System Rich-Left Bank | ||||||
| P0174/0210 | Fuel System Lean-Right Bank | ||||||
| P0175/0209 | Fuel System Rich-Right Bank | ||||||
| P0180/0402 | Fuel Tank Temperature (FTT) Sensor | ||||||
| P0300/0701 | Multiple Cylinder Misfire | ||||||
| P0301/0608 | Cylinder No. 1 Misfire | ||||||
| P0302/0607 | Cylinder No. 2 Misfire | ||||||
| P0303/0606 | Cylinder No. 3 Misfire | ||||||
| P0304/0605 | Cylinder No. 4 Misfire | ||||||
| P0305/0604 | Cylinder No. 5 Misfire | ||||||
| P0306/0603 | Cylinder No. 6 Misfire | ||||||
| P0307/0602 | Cylinder No. 7 Misfire | ||||||
| P0308/0601 | Cylinder No. 8 Misfire | ||||||
| P0325/0304 (1) | Knock Sensor-Left Bank | ||||||
| P0330/0212 (1) | Knock Sensor-Right Bank | ||||||
| P0335/0802 | Crankshaft Position (CKP) Sensor/Circuit | ||||||
| P0340/0101 | Camshaft Position (CMP) Sensor/Circuit | ||||||
| P0400/0302 | EGR Function (Close) | ||||||
| P0402/0306 | EGR Control Backpressure Transducer (EGRC-BPT) | ||||||
| P0420/0702 | Three-Way Catalyst Function-Left Bank | ||||||
| P0430/0703 | Three-Way Catalyst Function-Right Bank | ||||||
| P0440/0705 | EVAP Small Leak (Negative Pressure) | ||||||
| P0443/1008 | EVAP Canister Purge Volume Control Valve (Circuit) | ||||||
| P0446/0903 | EVAP Canister Vent Control Valve (Circuit) | ||||||
| P0450/0704 | EVAP Control System Pressure Sensor | ||||||
| P0455/0715 | EVAP Large Leak | ||||||
| P0500/0104 | Vehicle Speed Sensor/Circuit | ||||||
| P0505/0205 | Idle Air Control Valve-Auxiliary Air Control (IACV-AAC) Valve/Circuit | ||||||
| P0510/0203 | Closed Throttle Position (TP) Switch/Circuit | ||||||
| P0600/0504 (2) | A/T Communication Line | ||||||
| P0605/0301 | ECM | ||||||
| P0705/1101 | (3) Park/Neutral Position (PNP) Switch/Circuit | ||||||
| P0710/1208 | (3) A/T Fluid Temperature Sensor/Circuit | ||||||
| P0720/1102 | (3) Vehicle Speed Sensor/Circuit | ||||||
| P0725/1207 | (3) Engine Speed Signal | ||||||
| P0731/1103 | (3) Incorrect Shift To 1st Gear | ||||||
| P0732/1104 | (3) Incorrect Shift To 2nd Gear | ||||||
| P0733/1105 | (3) Incorrect Shift To 3rd Gear | ||||||
| P0734/1106 | (3) Incorrect Shift To 4th Gear | ||||||
| P0740/1204 | (3) TCC Solenoid/Circuit | ||||||
| P0744/1107 | (3) Torque Converter Clutch Function | ||||||
| P0745/1205 | (3) Line Pressure Solenoid/Circuit | ||||||
| P0750/1108 | (3) Shift Solenoid "A"/Circuit | ||||||
| P0755/1201 | (3) Shift Solenoid "B"/Circuit | ||||||
| P1105/1302 | MAP/BARO Solenoid/Circuit | ||||||
| P1110/0805 | Intake Valve Timing Control (IVTC)-Left Bank | ||||||
| P1120/0406 | Secondary TP Sensor/Circuit | ||||||
| P1125/0110 | Tandem TP Sensor/Circuit | ||||||
| P1135/1301 | Intake Valve Timing Control (IVTC)-Right Bank | ||||||
| P1140/1303 | IVTC Position Sensor-Left Bank | ||||||
| P1145/1304 | IVTC Position Sensor-Right Bank | ||||||
| P1148/0307 | Closed Loop Fault Detected-Left Bank | ||||||
| P1168/0308 | Closed Loop Fault Detected-Right Bank | ||||||
| P1210/0106 | Traction Control System Signal Circuit | ||||||
| P1220/1305 | Fuel Pump Control Module (FPCM)/Circuit | ||||||
| P1320/0201 | Ignition Signal | ||||||
| P1336/0905 | Crankshaft Position (CKP) Sensor | ||||||
| P1400/1005 | EGR Control Solenoid | ||||||
| P1401/0305 | EGR Temperature Sensor/Circuit | ||||||
| P1402/0514 | EGR Function (Open) | ||||||
| P1440/0213 | EVAP Small Leak (Positive Pressure) | ||||||
| P1444/0214 | EVAP Canister Purge Volume Control Valve | ||||||
| P1446/0215 | EVAP Canister Vent Control Valve (Close) | ||||||
| P1447/0111 | EVAP Purge Flow Monitor | ||||||
| P1448/0309 | EVAP Canister Vent Control Valve (Open) | ||||||
| P1490/0801 | Vacuum Cut Valve By-Pass Valve (Circuit) | ||||||
| P1491/0311 | Vacuum Cut Valve By-Pass Valve | ||||||
| P1492/0807 | EVAP Canister Purge Control Solenoid (Circuit) | ||||||
| P1493/0312 | EVAP Canister Purge Control Valve/Solenoid | ||||||
| P1605/0804 | A/T Diagnostic Communication Line | ||||||
| P1705/1206 | (3) A/T Temperature Sensor | ||||||
| P1706/1003 | Park/Neutral Position (PNP) Switch | ||||||
| P1760/1203 | (3) Overrunning Clutch Solenoid | ||||||
|
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Factory Service Tools
Use the Manual With the Right Hardware
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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.