AutoCodes – Acura – P0747 Acura

P0747 Acura Code - Clutch Pressure Control Solenoid 'A' Stuck On

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 Pressure Control Solenoid. 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: P0747 Acura indicates Clutch Pressure Control Solenoid 'A' Stuck On.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Pressure Control Solenoid.
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 16,486

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 Aug 02, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0747 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 P0747 Acura - Clutch Pressure Control Solenoid 'A' Stuck On - AutoCodes.com — P0747 Acura Code - Clutch Pressure Control Solenoid 'A' Stuck On

What does this mean?

What are the Possible Causes of the DTC P0747 Acura?

Low transmission fluid level
Dirty transmission fluid
Faulty Pressure Control Solenoid
Pressure Control Solenoid harness is open or shorted
Pressure Control Solenoid circuit poor electrical connection

How to Fix the DTC P0747 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 has 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, remove 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.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0747 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 P0747 Acura Code

1. What does the OBDII code P0747 mean on an Acura?

P0747 indicates that the Clutch Pressure Control Solenoid 'A' is stuck in the "on" position, which can cause transmission performance issues.

2. What are the common symptoms of code P0747 on an Acura?

Symptoms include harsh or delayed shifting, transmission slippage, poor fuel economy, and possibly the vehicle going into limp mode.

3. What causes the P0747 code to appear on an Acura?

Possible causes include a faulty clutch pressure control solenoid, low or contaminated transmission fluid, a clogged transmission filter, or internal transmission damage.

4. Can low transmission fluid cause the P0747 code on an Acura?

Yes, low or contaminated transmission fluid can lead to improper solenoid operation and trigger the P0747 code.

5. How do you diagnose the P0747 code on an Acura?

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

6. Can you drive an Acura with code P0747?

Driving with the P0747 code is not recommended, as it can cause further transmission damage or result in unsafe driving conditions.

7. How much does it cost to repair the P0747 code on an Acura?

Repair costs vary widely but may range from $150 to $500 for solenoid replacement. If internal transmission damage is found, repairs could cost significantly more.

8. Can a clogged transmission filter cause the P0747 code on an Acura?

Yes, a clogged transmission filter can restrict fluid flow, leading to solenoid issues and triggering the P0747 code.

9. How can I prevent the P0747 code from recurring on my Acura?

Regular maintenance, such as changing the transmission fluid and filter at recommended intervals, and promptly addressing any transmission issues, can help prevent this code.

10. Do I need to replace the transmission to fix the P0747 code on an Acura?

Not necessarily. In many cases, replacing the solenoid or addressing fluid issues resolves the problem. However, severe internal transmission damage may require a rebuild or replacement.