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.

2003 Infiniti I35FACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Definitions: Notes

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC	Description
U1000	CAN COMMUNICATION LINE
P0705	PARK/NEUTRAL POSITION SWITCH
P0710	A/T FLUID TEMPERATURE SENSOR CIRCUIT
P0720	VEHICLE SPEED SENSOR.A/T (REVOLUTION SENSOR)
P0725	ENGINE SPEED SIGNAL
P0731	A/T 1st GEAR FUNCTION
P0732	A/T 2ED GEAR FUNCTION
P0733	A/T 3ED GEAR FUNCTION
P0734	A/T 4TH GEAR FUNCTION
P0740	TORQUE CONVERTER CLUTCH SOLENOID VALVE
P0744	A/T TCC S/V FUNCTION (LOCK-UP)
P0745	LINE PRESSURE SOLENOID VALVE
P0750	SHIFT SOLENOID VALVE A
P0755	SHIFT SOLENOID VALVE B
P1705	ACCELERATOR PEDAL POSITION SENSOR (THROTTLE POSITION SENSOR)
P1760	OVERRUN CLUTCH SOLENOID VALVE

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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