AutoCodes – Acura – P0745 Acura

P0745 Acura 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 Acura 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 6,270

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 Jan 29, 2019

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

What does this mean?

What are the Possible Causes of the DTC P0745 Acura?

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 Acura?

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 Acura 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 Acura Code

What does the OBDII code P0745 mean for an Acura?

P0745 indicates a malfunction in the pressure control solenoid, which regulates hydraulic pressure in the transmission system.

What are the common symptoms of code P0745 in an Acura?

Symptoms include harsh or delayed shifting, transmission slipping, reduced fuel efficiency, and potential activation of the Check Engine Light.

What causes the P0745 code to appear on an Acura?

Common causes include a faulty pressure control solenoid, low or dirty transmission fluid, a damaged wiring harness, or issues with the transmission control module (TCM).

Can I drive my Acura with the P0745 code active?

While the vehicle may still be drivable, continued operation can cause further transmission damage. It's best to address the issue promptly.

How do I diagnose the P0745 code on my Acura?

Diagnosis involves checking the transmission fluid level and condition, inspecting the wiring and connectors, and testing the pressure control solenoid for proper operation.

What tools are needed to troubleshoot the P0745 code on an Acura?

You'll need an OBDII scanner, a digital multimeter, and possibly a transmission pressure gauge to accurately diagnose the issue.

How much does it cost to fix the P0745 code on an Acura?

Repair costs can vary depending on the cause. Replacing the pressure control solenoid typically ranges from $200 to $400, while more extensive transmission repairs may cost more.

Can low transmission fluid trigger the P0745 code on an Acura?

Yes, low or dirty transmission fluid can cause improper solenoid operation, potentially triggering the P0745 code.

Is the P0745 code common in Acura vehicles?

While not extremely common, the P0745 code can appear in older Acura models or those with high mileage, especially if the transmission is not well-maintained.

How can I prevent the P0745 code from occurring in my Acura?

Regularly check and change the transmission fluid, inspect wiring and connectors, and address any transmission issues promptly to prevent solenoid malfunctions.