AutoCodes – Honda – P0777 Honda

P0777 Honda 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 Honda 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 27,581

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

What does this mean?

What are the Possible Causes of the DTC P0777 Honda?

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 Honda?

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 Honda 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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Information for Specific Honda Models

P0777 2016 Honda CR-V — CVT Driven Pulley Pressure Control Solenoid Valve Stuck ON
P0777 2017 Honda CR-V — CVT Driven Pulley Pressure Control Solenoid Valve Stuck ON
P0777 2018 Honda CR-V — CVT Driven Pulley Pressure Control Solenoid Valve Stuck ON
P0777 2019 Honda CR-V — CVT Driven Pulley Pressure Control Solenoid Valve Stuck ON
P0777 2020 Honda CR-V — CVT Driven Pulley Pressure Control Solenoid Valve Stuck ON
P0777 2021 Honda CR-V — CVT Driven Pulley Pressure Control Solenoid Valve Stuck ON

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 Honda Code

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Jon
Date: December 29, 2018 at 5:48 am

Where is the pressure control solenoid b located in the 2006 Honda odyssey?

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OBDIITech
Date: December 29, 2018 at 4:26 pm

The solenoid is attached on top of the transmission. Here is the only image I got:

Click here to enlarge image

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