AutoCodes – Nissan – P0745 2005 Nissan Sentra

P0745 2005 Nissan Sentra Code - Line Pressure Solenoid Valve Fault

Quick Answer

The Pressure Control (PC) Solenoid Valve an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty line pressure solenoid valve. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0745 2005 Nissan Sentra indicates Line Pressure Solenoid Valve Fault.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty line pressure solenoid valve.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 5,568

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 28, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0745 2005 Nissan Sentra Description

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).

OBDII Code P0745 2005 Nissan Sentra - Line Pressure Solenoid Valve Fault - AutoCodes.com — P0745 2005 Nissan Sentra Code - Line Pressure Solenoid Valve Fault

What does this mean?

What are the Possible Causes of the DTC P0745 2005 Nissan Sentra?

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 DTC P0745 2005 Nissan Sentra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code 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 2005 Nissan Sentra:
2005 Nissan Sentra Factory Service Bulletin OBDII Code P0745

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0745 2005 Nissan Sentra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0745 2005 Nissan Sentra code?

Need more information on how to fix the P0745 2005 Nissan Sentra code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0745 2005 Nissan Sentra Code

1. What are the common symptoms of OBDII code P0745 in a 2005 Nissan Sentra?

The common symptoms of P0745 in a 2005 Nissan Sentra include harsh shifting, transmission slipping, and decreased fuel efficiency.

2. What does the P0745 OBDII code indicate in a 2005 Nissan Sentra?

The P0745 code indicates a fault with the line pressure solenoid valve in the transmission of a 2005 Nissan Sentra.

3. What are the possible causes of the P0745 code in a 2005 Nissan Sentra?

Possible causes of the P0745 code in a 2005 Nissan Sentra include a faulty line pressure solenoid valve, low transmission fluid, or wiring issues.

4. How serious is the P0745 OBDII code in a 2005 Nissan Sentra?

The P0745 code should be addressed promptly as it can lead to further damage to the transmission if left unresolved.

5. How can I diagnose the P0745 code in my 2005 Nissan Sentra?

Diagnosing the P0745 code involves using a scan tool to retrieve the code, checking the transmission fluid level and condition, and inspecting the wiring connected to the line pressure solenoid valve.

6. Can I continue driving my 2005 Nissan Sentra with the P0745 code?

It is not recommended to drive your 2005 Nissan Sentra with the P0745 code present, as it can lead to transmission issues and potential further damage.

7. How can the P0745 OBDII code be repaired in a 2005 Nissan Sentra?

Repairing the P0745 code in a 2005 Nissan Sentra may involve replacing the line pressure solenoid valve, topping up or replacing the transmission fluid, or repairing any damaged wiring.

8. Is it possible to reset the P0745 code in a 2005 Nissan Sentra without fixing the underlying issue?

Resetting the code without fixing the underlying issue will only temporarily remove the warning light, but the problem will persist and may worsen over time.

9. Can a DIY enthusiast repair the P0745 code in a 2005 Nissan Sentra?

While some may attempt to repair the P0745 code themselves, it is recommended to seek professional help due to the complexity of transmission-related repairs.

10. How much does it typically cost to repair the P0745 code in a 2005 Nissan Sentra?

The cost of repairing the P0745 code in a 2005 Nissan Sentra can vary depending on the root cause, but it may range from $200 to $800 including parts and labor.