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AutoCodes – Toyota – P0776 Toyota

P0776 Toyota Code - Pressure Control Solenoid 'B' Performance

Quick Answer

Changing from 1st to 6th is performed by the Engine Control Module (ECM) turning shift solenoid valves SL1, SL2, SL3, SL4, and SL on and off. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Pressure Control Solenoid 'B' valve (Shift Solenoid Valve SL2). 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
P0776 Toyota indicates Pressure Control Solenoid 'B' Performance.
Common causes
Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Pressure Control Solenoid 'B' valve (Shift Solenoid Valve SL2).
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 84,233
How popular is this code, among other codes? Medium
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Table of contents Created and updated by William Orellana on Sep 11, 2022
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Code P0776 Toyota Description

Changing from 1st to 6th is performed by the Engine Control Module (ECM) turning shift solenoid valves SL1, SL2, SL3, SL4, and SL on and off. If an open or short circuit occurs in any of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated.
The ECM commands gear shifts by turning the shift solenoid valves on and off. According to the input shaft speed, intermediate (counter) shaft speed, and output shaft speed, the ECM detects the actual gear (1st, 2nd, 3rd, 4th, 5th or 6th gear). When the gear commanded by the ECM and the actual gear are not the same, the ECM illuminates the MIL and stores the Diagnostic Trouble Code (DTC).
OBDII Code P0776 Toyota - Pressure Control Solenoid 'B' Performance - AutoCodes.com
P0776 Toyota Code - Pressure Control Solenoid 'B' Performance
What does this mean?

What are the Possible Causes of the DTC P0776 Toyota?

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty Pressure Control Solenoid 'B' valve (Shift Solenoid Valve SL2)
  • Pressure Control Solenoid 'B' valve harness is open or shorted
  • Pressure Control Solenoid 'B' valve circuit poor electrical connection
  • Transmission valve body assembly is blocked
  • Faulty Automatic transaxle assembly

How to Fix the DTC P0776 Toyota?

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 malfunction, 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0776 Toyota 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 P0776 Toyota code?

Need more information on how to fix the P0776 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Toyota Models

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 P0776 Toyota Code

1. What are the common symptoms of OBDII code P0776 in a Toyota?

The common symptoms of OBDII code P0776 in a Toyota include harsh shifting, delayed or erratic shifting, transmission slipping, and decreased fuel efficiency.

2. What does the OBDII code P0776 Toyota indicate?

OBDII code P0776 in a Toyota indicates an issue with the Pressure Control Solenoid 'B' performance within the transmission.

3. What are the possible causes of OBDII code P0776 in a Toyota?

Possible causes of OBDII code P0776 in a Toyota include a faulty pressure control solenoid 'B', low transmission fluid, clogged transmission filter, wiring issues, or internal transmission problems.

4. How can I diagnose the source of OBDII code P0776 in my Toyota?

Diagnosing the source of OBDII code P0776 in your Toyota may require a scan tool to retrieve the code, checking the transmission fluid level and condition, inspecting for any visible damage to wiring, and conducting a thorough transmission system inspection.

5. Can I continue driving my Toyota with OBDII code P0776 present?

It is not recommended to continue driving your Toyota with OBDII code P0776 present, as it can lead to further damage to the transmission and potentially unsafe driving conditions.

6. How can I repair OBDII code P0776 in my Toyota?

Repairing OBDII code P0776 in your Toyota may involve replacing the pressure control solenoid 'B', performing a transmission fluid flush and filter replacement, repairing any damaged wiring, or seeking professional help for more complex transmission issues.

7. Is it possible to reset OBDII code P0776 in a Toyota without fixing the underlying issue?

While you can clear the OBDII code P0776 in your Toyota using a scan tool, it is crucial to address the underlying issue causing the code to prevent further transmission problems.

8. Can a DIY enthusiast fix OBDII code P0776 in a Toyota?

Depending on your mechanical expertise, fixing OBDII code P0776 in a Toyota may be possible for a DIY enthusiast when dealing with tasks like replacing the pressure control solenoid 'B' or checking wiring connections. However, more complex transmission issues may require professional assistance.

9. How much does it cost to repair OBDII code P0776 in a Toyota?

The cost to repair OBDII code P0776 in a Toyota can vary depending on the underlying cause, parts needed for replacement, labor costs, and whether you choose to fix it yourself or seek professional help. It is advisable to obtain quotes from reputable mechanics or repair shops.

10. Can regular maintenance help prevent OBDII code P0776 in a Toyota?

Regular maintenance, such as checking and changing transmission fluid as recommended by the manufacturer, can help prevent issues like OBDII code P0776 in a Toyota by ensuring optimal transmission performance and early detection of potential problems.

Discuss the causes and fixes for P0776 Toyota OBDII Code

Submit a New Comment

  • I have done nothing yet on this matter. Don't know what to do?

    Reply to Comment

  • if you want to fix the issue you may to get the valve body repaired (Faulty line pressure solenoid 'B' valve), or if there are metal shaving in the transmission it will have to be replaced.

    Reply to Comment

  • Just got this code a few days ago after my wife, who drives our 04 Toyota Sienna LE(125 k+miles), went home so pissed saying the minivan woudn't accelerate when going on green light, and on bumper to bumper situations, the drive shift would lock & slip. Checked myself and confirmed that something was stuck when I proceeded to drive or would just speed up for no reason when going--get scared initially. Kept my cool though & looked up the code. Did the following: 1. replaced transmission fluid but will do a complete flush as it was so dirty; 2. ordered solenoid clutch assembly(SL2) and removed the valve body assembly which is a pain. Problem here is, I didn't realize that I needed 2 of these which are pricey if you get it from the stealership--or look it up on ebay or amazon and find a better deal. You need to know the exact locations of the 2 solenoids, lest replace the wrong one as one type looked similar, so beware. Waiting for the 2nd SL2. Key is patience. DIY is taking time to correctly do it. Your family's lives depend on what you do. Research before jumping into something. Spent hours researching and looking at the manual before the actual job. Case to case. After transmission replacement you may not replace the solenoids as during the trials I ran it after filling the transmission and the van run as if nothing happened. But being me, since I am opening it I went on to replace the parts since I just finishing the CV axles (front) and bearings anyway in preparation for a wheel alignment. Replaced also 2 crappy front tires. So there. I erased the code knowing that I knew what to do minus a visit from the despicable stealership!

    Reply to Comment

  • I have p0776 code 04 camry it jerks wen I come to a stop or I slow down to go over speed bump n then accelerate I swapped out trans and with the new one I'm having the same problem

    Reply to Comment

  • The Transmission Filter, Automatic Transmission Shift Solenoid, and the Torque Converter are the most common cause of the P0776 code, but those items should come with the new transmission. Unfortunately, other than those items, I have not seen any other components setting the code. Did you install a new or used transmission? Or did you have your transmission rebuilt? If you did, then you should consider taking your vehicle back to the shop.

    Reply to Comment
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