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.
1997 Infiniti Q45 BaseFACTORY OEM SERVICE PROCEDURE
Engine PERMANCE DTCS
ENGINE PERMANCE DTCS
| DTC | OEM Code | Description | ||||||
|---|---|---|---|---|---|---|---|---|
| P0000 | 0505 | No Malfunction | ||||||
| P0100 | 0102 | Mass Airflow Sensor Circuit | ||||||
| P0110 | 0401 | Intake Air Temp. Sensor | ||||||
| P0115 | 0103 | Engine Coolant Temperature Sensor | ||||||
| P0120 | 0403 | Throttle Position Sensor | ||||||
| P0125 | 0908 | Engine Coolant Temperature Sensor | ||||||
| P0130 | 0307 | Right Front HO2S | ||||||
| P0130 | 0503 | Right Front HO2S | ||||||
| P0135 | 0901 | Right Front HO2S | ||||||
| P0136 | 0707 | Rear HO2S | ||||||
| P0141 | 0902 | Rear HO2S Heater | ||||||
| P0150 | 0303 | Left Front HO2S | ||||||
| P0150 | 0308 | Left Front HO2S | ||||||
| P0155 | 1001 | Left Front HO2S | ||||||
| P0156 | 0708 | Left Rear HO2S Fuel System | ||||||
| P0161 | 1002 | Left Rear HO2S | ||||||
| P0171 | 0115 | Right Side Fuel System Failure | ||||||
| P0172 | 0114 | Right Side Fuel System Failure | ||||||
| P0174 | 0210 | Left Side Fuel System Failure | ||||||
| P0175 | 0209 | Left Side Fuel System Failure | ||||||
| P0300 | 0701 | Random Cyl. Misfire | ||||||
| P0301 | 0608 | No. 1 Cyl. Misfire | ||||||
| P0302 | 0607 | No. 2 Cyl. Misfire | ||||||
| P0303 | 0606 | No. 3 Cyl. Misfire | ||||||
| P0304 | 0605 | No. 4 Cyl. Misfire | ||||||
| P0305 | 0604 | No. 5 Cyl. Misfire | ||||||
| P0306 | 0603 | No. 6 Cyl. Misfire | ||||||
| P0307 | 0602 | No. 7 Cyl. Misfire | ||||||
| P0308 | 0601 | No. 8 Cyl. Misfire | ||||||
| P0325(1) | 0304 | Knock Sensor | ||||||
| P0335 | 0802 | Crankshaft Position Sensor | ||||||
| P0340 | 0101 | Camshaft Position Sensor | ||||||
| P0400 | 0302 | EGR Function | ||||||
| P0402 | 0306 | EGRC-BPT Valve Function | ||||||
| P0420 | 0702 | Three-Way Catalyst Malfunction | ||||||
| P0430 | 0703 | Three-Way Catalyst Malfunction | ||||||
| P0500 | 0104 | Vehicle Speed Sensor (VSS) | ||||||
| P0505 | 0205 | Idle Air Control (IAC) Valve | ||||||
| P0600(2) | 0504 | A/T Communication Signal | ||||||
| P0605 | 0301 | ECM | ||||||
| P0705 | 1003 | Park/Neutral Position Switch | ||||||
| P0705 | 1101 | Park/Neutral Position Switch | ||||||
| P0710 | 1208 | Fluid Temperature Sensor | ||||||
| P0720 | 1102 | Vehicle Speed Sensor | ||||||
| P0725 | 1207 | Engine Speed Signal | ||||||
| P0731 | 1103 | Incorrect Shift To 1st Gear | ||||||
| P0732 | 1104 | Incorrect Shift To 2nd Gear | ||||||
| P0733 | 1105 | Incorrect Shift To 3rd Gear | ||||||
| P0734 | 1106 | Incorrect Shift To 4th Gear | ||||||
| P0740 | 1204 | TCC Solenoid Valve | ||||||
| P0745 | 1205 | Line Pressure Solenoid Valve | ||||||
| P0750 | 1108 | Shift Solenoid Valve A | ||||||
| P0755 | 1201 | Shift Solenoid Valve B | ||||||
| P1110 | 0805 | Left Intake Valve Timing Control (IVTC) Solenoid | ||||||
| P1125 | 1502 | Tandem Throttle Position Sensor | ||||||
| P1135 | 1301 | Right Intake Valve Timing Control (IVTC) Solenoid | ||||||
| P1140 | 1303 | Left Intake Valve Timing Control (IVTC) Position Sensor | ||||||
| P1145 | 1304 | Right Intake Valve Timing Control (IVTC) Position Sensor | ||||||
| P1210 | 0106 | Traction Control System (TCS) Signal Circuit | ||||||
| P1220 | 1305 | Fuel Pump Control Module (FPCM) | ||||||
| P1320 | 0201 | Ignition Signal Circuit | ||||||
| P1336 | 0905 | Crankshaft Position Sensor | ||||||
| P1400 | 1005 | EGRC Solenoid | ||||||
| P1401 | 0305 | EGR Temperature Sensor | ||||||
| P1605 | 0804 | A/T Communication Signal | ||||||
| P1705 | 1206 | Throttle Position Sensor | ||||||
| P1760 | 1203 | Overrun Clutch Solenoid Valve B | ||||||
| P1900 | 1308 | Cooling Fan Circuit | ||||||
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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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