AutoCodes – Mitsubishi – P0777 Mitsubishi

P0777 Mitsubishi Code - Pressure Control Solenoid 'B' Stuck On

Quick Answer

The Pressure Control (PC) Solenoid Valve is 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 Mitsubishi indicates Pressure Control Solenoid '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 4,188

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 16, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0777 Mitsubishi Description

The Pressure Control (PC) Solenoid Valve is an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. As the 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 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 Mitsubishi - Pressure Control Solenoid 'B' Stuck On - AutoCodes.com — P0777 Mitsubishi Code - Pressure Control Solenoid 'B' Stuck On

What does this mean?

What are the Possible Causes of the DTC P0777 Mitsubishi?

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 Mitsubishi?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0777 Mitsubishi 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.

Need more information about the P0777 Mitsubishi code?

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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 Mitsubishi Code

1. What are the common symptoms of OBDII code P0777 in a Mitsubishi related to the Pressure Control Solenoid 'B' Stuck On?

- Common symptoms include harsh shifting, transmission slipping, decreased fuel efficiency, and the transmission going into limp mode.

2. What are some possible causes of the Pressure Control Solenoid 'B' Stuck On code in a Mitsubishi?

- Possible causes can include a faulty pressure control solenoid 'B', low transmission fluid levels, a clogged transmission filter, or electrical issues.

3. How can I diagnose the Pressure Control Solenoid 'B' issue in my Mitsubishi?

- Diagnosing the issue typically involves scanning the vehicle's onboard computer with an OBDII scanner to retrieve the specific trouble code and then conducting further testing to pinpoint the exact cause.

4. Can I continue driving my Mitsubishi with the P0777 code present?

- It is not recommended to continue driving your Mitsubishi with the P0777 code present as it can lead to further damage to the transmission and potentially result in a costly repair.

5. How can I repair the Pressure Control Solenoid 'B' Stuck On issue in my Mitsubishi?

- Repairing the issue may involve replacing the pressure control solenoid 'B', checking and topping up transmission fluid, inspecting and replacing the transmission filter, or addressing any electrical issues causing the malfunction.

6. Is it possible to clear the P0777 code in my Mitsubishi without fixing the underlying issue?

- While you can clear the code using an OBDII scanner, the issue causing the code will likely persist, leading to potential transmission problems down the line. It is best to address the root cause of the code.

7. How much does it typically cost to repair the Pressure Control Solenoid 'B' issue in a Mitsubishi?

- The cost of repair can vary depending on the specific cause of the problem, but it could range from a few hundred to over a thousand dollars, including parts and labor.

8. Are there any preventive maintenance steps I can take to avoid the P0777 code in my Mitsubishi?

- Regularly checking and changing transmission fluid, maintaining proper fluid levels, and addressing any transmission issues promptly can help prevent the occurrence of the P0777 code.