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AutoCodes – Generic – P0775

P0775 Code - Pressure Control Solenoid 'B'

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
P0775 indicates Pressure Control Solenoid 'B'.
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 35,000
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Jan 30, 2019
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Code P0775 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 P0775 - Pressure Control Solenoid 'B' - AutoCodes.com
P0775 Code - Pressure Control Solenoid 'B'
What does this mean?

What are the Possible Causes of the DTC P0775?

  • 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 P0775?

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 P0775 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 P0775 code?

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Need Help with the Code?

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Information for Specific Makes

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 P0775 Code

1. What are the common symptoms of OBDII code P0775 (Pressure Control Solenoid 'B')?

- Common symptoms include harsh shifting, erratic shifting behavior, transmission slipping, and decreased fuel efficiency.

2. What can cause the OBDII code P0775 to trigger?

- The code is usually triggered by a faulty pressure control solenoid 'B', low transmission fluid levels, dirty transmission fluid, or internal transmission issues.

3. How serious is the OBDII code P0775?

- Ignoring the code can lead to further damage to the transmission and potentially result in complete transmission failure if not addressed promptly.

4. Can I continue driving with OBDII code P0775?

- It is not recommended to continue driving with this code as it can cause further damage to the transmission. It's best to have the issue diagnosed and repaired as soon as possible.

5. How is OBDII code P0775 diagnosed?

- Diagnosis typically involves using a scan tool to retrieve the code, conducting a visual inspection of the transmission, checking fluid levels and quality, and testing the pressure control solenoid 'B' for proper operation.

6. How can I repair OBDII code P0775?

- Repairing the code may involve replacing the pressure control solenoid 'B', performing a transmission fluid flush and filter replacement, or addressing any underlying transmission issues identified during diagnosis.

7. Can a DIY enthusiast fix OBDII code P0775?

- While some experienced DIY enthusiasts may be able to replace the pressure control solenoid 'B', it is generally recommended to have a professional mechanic diagnose and repair the issue due to the complexity of transmission systems.

8. How much does it cost to repair OBDII code P0775?

- The cost of repairing OBDII code P0775 can vary depending on the underlying cause, parts needed, and labor rates. It's advisable to get estimates from local repair shops for an accurate cost assessment.

9. Are there any preventive maintenance tips to avoid OBDII code P0775?

- Regularly servicing the transmission, checking and maintaining proper fluid levels, and addressing any transmission issues promptly can help prevent the occurrence of OBDII code P0775.

10. Can a faulty pressure control solenoid 'B' be cleaned or repaired, or does it need to be replaced?

- In most cases, a faulty pressure control solenoid 'B' will need to be replaced as cleaning or repairing may not provide a lasting solution.

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