AutoCodes – Toyota – P0778 2010 Toyota Camry

P0778 2010 Toyota Camry Code - Pressure Control Solenoid 'B' Electrical Valve SL2

Quick Answer

Shifting from 1st to 5th is performed in combination with “ON’ and “OFF operation of the shift solenoid valves SL1, SL2, SL3, S4 and SR which are controlled by the ECM. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty 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: P0778 2010 Toyota Camry indicates Pressure Control Solenoid 'B' Electrical Valve SL2.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty 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 3,361

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Mar 28, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0778 2010 Toyota Camry Description

Shifting from 1st to 5th is performed in combination with “ON’ and “OFF operation of the shift solenoid valves SL1, SL2, SL3, S4 and SR which are controlled by the ECM. If an open or short circuit occurs in either of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated smoothly (Fail Safe Function).

OBDII Code P0778 2010 Toyota Camry - Pressure Control Solenoid 'B' Electrical Valve SL2 - AutoCodes.com — P0778 2010 Toyota Camry Code - Pressure Control Solenoid 'B' Electrical Valve SL2

What does this mean?

What are the Possible Causes of the DTC P0778 2010 Toyota Camry?

Low transmission fluid level
Dirty transmission fluid
Faulty shift solenoid valve SL2
Shift solenoid valve SL2 harness is open or shorted
Shift solenoid valve SL2 circuit poor electrical connection
Valve body is blocked

How to Fix the DTC P0778 2010 Toyota Camry?

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 P0778 2010 Toyota Camry 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 P0778 2010 Toyota Camry Code

1. What does the OBDII code P0778 mean on a 2010 Toyota Camry?

The P0778 code indicates an issue with the Pressure Control Solenoid 'B' (also known as Valve SL2), specifically an electrical problem within the circuit.

2. What are the common symptoms of the P0778 code in a Toyota Camry?

Symptoms may include harsh or erratic shifting, failure to shift gears properly, transmission slipping, reduced fuel efficiency, or the check engine light turning on.

3. What causes the P0778 code to appear in a 2010 Toyota Camry?

Common causes include a faulty pressure control solenoid, damaged wiring or connectors in the solenoid circuit, low or dirty transmission fluid, or a malfunctioning transmission control module (TCM).

4. How do I diagnose the P0778 code in my Toyota Camry?

Diagnosis typically involves scanning the vehicle with an OBDII scanner, inspecting the solenoid wiring for damage, testing the solenoid's resistance, and checking the transmission fluid quality and level.

5. Can I drive my 2010 Toyota Camry with the P0778 code?

Driving with this code is not recommended, as it can lead to further transmission damage and unsafe driving conditions if the transmission fails to shift properly.

6. How can I fix the P0778 code on my Toyota Camry?

Repairs may include replacing the pressure control solenoid, repairing or replacing damaged wiring or connectors, flushing and refilling the transmission fluid, or replacing the TCM if necessary.

7. How much does it cost to repair the P0778 code on a 2010 Toyota Camry?

Costs vary depending on the repair needed, but replacing the solenoid typically ranges from $150 to $400, while additional wiring or TCM repairs can increase the price.

8. Can dirty transmission fluid cause the P0778 code?

Yes, dirty or low transmission fluid can affect solenoid operation and trigger the P0778 code. Flushing and refilling the fluid can sometimes resolve the issue.

9. Where is the Pressure Control Solenoid 'B' located in a 2010 Toyota Camry?

The solenoid is located inside the transmission, typically mounted on the valve body. Access requires removing the transmission pan.

10. Does the P0778 code always require solenoid replacement?

No, it may not always require replacement. The issue could be due to wiring problems, a bad connection, or low transmission fluid, which should be checked first.