Engine-Codes - Nissan - P0745 2003 Nissan Altima Sedan

P0745 2003 Nissan Altima Sedan Code - Line Pressure Solenoid Valve Fault

- Code Popularity: 27,808 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code P0745 2003 Nissan Altima Sedan?

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty line pressure solenoid valve
  • Line pressure solenoid valve harness is open or shorted
  • Line pressure solenoid valve circuit poor electrical connection

|How to Fix the P0745 2003 Nissan Altima Sedan Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Code P0745 2003 Nissan Altima Sedan Tech Notes

When a transmission solenoid is malfunctioned, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is dirty, it's recommended to change the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a mechanical transmission failure and that the transmission will need to be rebuilt or replaced.

There is a factory service bulletin for the 2003 Nissan Altima:
2003 Nissan Altima Factory Service Bulletin OBDII Code P0745

|What is the Cost to Diagnose the Code P0745 2003 Nissan Altima Sedan?

Labor: 1.0

The cost to diagnose the P0745 2003 Nissan Altima Sedan code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|When is the P0745 2003 Nissan Altima Sedan Code Detected?

The P0745 is detected when TCM detects an improper voltage drop when it tries to operate the solenoid valve.

|What are Code P0745 2003 Nissan Altima Sedan Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Transmission shift shock

|What Does the P0745 2003 Nissan Altima Sedan Code Mean?

The Pressure Control (PC) Solenoid Valve an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. As current flow is increased, the magnetic field produced by the coil moves the solenoid’s plunger further away from the exhaust port. Opening the exhaust port decreases the output fluid pressure regulated by the PC solenoid valve, which ultimately decreases line pressure. The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the Transmission Control Module (TCM).

Line Pressure Solenoid Valve Fault

|Need more Information on the P0745 2003 Nissan Altima Sedan Code?

Need more information on how to fix the P0745 2003 Nissan Altima Sedan code? Get Access to Factory Service Manuals

|Need Help with the P0745 2003 Nissan Altima Sedan Code?

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