AutoCodes – Acura – P0777 Acura

P0777 Acura Code - Pressure Control Solenoid Valve 'B' 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 line pressure solenoid 'B' 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: P0777 Acura indicates Pressure Control Solenoid Valve 'B' Stuck On.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty line pressure solenoid 'B' 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 10,117

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 P0777 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 P0777 Acura - Pressure Control Solenoid Valve 'B' Stuck On - AutoCodes.com — P0777 Acura Code - Pressure Control Solenoid Valve 'B' Stuck On

What does this mean?

What are the Possible Causes of the DTC P0777 Acura?

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

How to Fix the DTC P0777 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 P0777 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 P0777 Acura Code

1. What are common symptoms of OBDII code P0777 in an Acura?

Symptoms may include harsh shifting, transmission slipping, decreased fuel efficiency, and the vehicle may go into limp mode.

2. What does the OBDII code P0777 in an Acura indicate?

Code P0777 indicates an issue with the Pressure Control Solenoid Valve 'B' being stuck on in the transmission.

3. What are possible causes of OBDII code P0777 in an Acura?

Common causes include a faulty pressure control solenoid, electrical issues, low transmission fluid, or internal transmission problems.

4. How serious is OBDII code P0777 in an Acura?

Code P0777 can lead to transmission issues and should be addressed promptly to prevent further damage to the transmission system.

5. Can I continue to drive my Acura with OBDII code P0777?

It is not recommended to continue driving the vehicle with this code present, as it can cause damage to the transmission over time.

6. How can I diagnose OBDII code P0777 in my Acura?

Diagnosis typically involves using a scan tool to read the code, checking the transmission fluid level and condition, and conducting a thorough inspection of the pressure control solenoid.

7. How can I repair OBDII code P0777 in my Acura?

Repair options may include replacing the pressure control solenoid, addressing any electrical issues, ensuring proper transmission fluid level, or seeking professional help for internal transmission problems.

8. Can I reset OBDII code P0777 in my Acura?

While you can clear the code using a scan tool, it is important to address the underlying issue causing the code to prevent it from reoccurring.

9. How much does it cost to repair OBDII code P0777 in an Acura?

The cost of repair can vary depending on the specific cause of the issue, but it is advisable to consult with a professional mechanic for an accurate diagnosis and cost estimate.

10. How can I prevent OBDII code P0777 from appearing in my Acura in the future?

Regular maintenance, including checking transmission fluid levels, addressing any leaks promptly, and following the manufacturer's recommended service intervals, can help prevent issues that may trigger this code.