AutoCodes – Lincoln – P0745 Lincoln

P0745 Lincoln Code - Pressure Control Solenoid Malfunction

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 Lincoln indicates Pressure Control Solenoid Malfunction.
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 848

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 May 04, 2021

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0745 Lincoln 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 Lincoln - Pressure Control Solenoid Malfunction - AutoCodes.com — P0745 Lincoln Code - Pressure Control Solenoid Malfunction

What does this mean?

What are the Possible Causes of the DTC P0745 Lincoln?

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 Lincoln?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0745 Lincoln 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.

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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 Lincoln Code

1. What are the common symptoms of OBDII code P0745 in a Lincoln vehicle?

- Common symptoms include harsh shifting, transmission slipping, decreased fuel efficiency, and an illuminated Check Engine light.

2. What does the OBDII code P0745 in a Lincoln indicate?

- OBDII code P0745 indicates a malfunction in the pressure control solenoid within the transmission.

3. What are the possible causes of the pressure control solenoid malfunction in a Lincoln causing code P0745?

- Possible causes include a faulty pressure control solenoid, low transmission fluid level, dirty or contaminated transmission fluid, or wiring issues.

4. How can I diagnose the pressure control solenoid malfunction causing OBDII code P0745 in my Lincoln?

- Diagnosing the issue typically involves conducting a thorough inspection of the transmission, checking the transmission fluid level and condition, and using a scan tool to monitor solenoid operation.

5. Can I continue driving my Lincoln with OBDII code P0745 present?

- It is not recommended to continue driving your Lincoln with code P0745 present, as it can lead to further damage to the transmission if not addressed promptly.

6. What is the typical repair process for resolving OBDII code P0745 in a Lincoln due to pressure control solenoid malfunction?

- The typical repair process involves replacing the faulty pressure control solenoid, addressing any fluid or wiring issues, and clearing the trouble codes from the vehicle's computer.

7. Are there any preventive maintenance tips to avoid OBDII code P0745 in a Lincoln?

- Regular transmission fluid checks and changes, as well as ensuring proper maintenance of the transmission system, can help prevent issues that may lead to code P0745.

8. Can a DIY enthusiast repair OBDII code P0745 related to pressure control solenoid malfunction in a Lincoln?

- While some DIY enthusiasts may have the skills to tackle this repair, it is recommended to consult a qualified mechanic or transmission specialist for proper diagnosis and repair.

9. How much does it typically cost to repair OBDII code P0745 in a Lincoln at a professional auto repair shop?

- Repair costs can vary depending on the extent of the issue and labor rates, but typically, the repair for code P0745 can range from $200 to $600 or more.

10. Will resetting the Check Engine light make OBDII code P0745 disappear in a Lincoln?

- Resetting the Check Engine light without addressing the underlying issue causing code P0745 will only temporarily clear the light, as the code will reappear once the problem is detected again.