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 Q45 BaseFACTORY OEM SERVICE PROCEDURE
Automatic Transmission DTCS
NOTE:
Retrieval of some diagnostic codes may require the use of special OEM tester or flash method using instrument cluster indicator. For procedures/testing of codes not shown below, refer to appropriate system article.
DIAGNOSTIC TROUBLE CODES (DTC) LIST
| DTC | Description |
|---|---|
| P0000/0505 | No Codes In System |
| P0705/1101 | Park/Neutral Position Switch |
| P0710/1208 | Transmission Fluid Temperature Sensor |
| P0720/1102 | A/T Revolution Sensor |
| P0725/1207 | Engine Speed Signal |
| P0731/1103 | A/T 1st Gear Signal |
| P0732/1104 | A/T 2nd Gear Signal |
| P0733/1105 | A/T 3rd Gear Signal |
| P0734/1106 | A/T 4th Gear Signal Or TCC Signal |
| P0740/1204 | TCC Solenoid Valve |
| P0744/1107 | TCC Solenoid Valve |
| P0745/1205 | Line Pressure Solenoid Valve |
| P0750/1108 | Shift Solenoid Valve "A" |
| P0755/1201 | Shift Solenoid Valve "B" |
| P1705/1206 | Throttle Position Sensor |
| P1760/1203 | Overrun Clutch Solenoid Valve |
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.
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