AutoCodes – Scion – P2757 Scion

P2757 Scion Code - Torque Converter Clutch Pressure Control Solenoid Performance Shift Solenoid Valve SLU

Quick Answer

The Engine Control Module (ECM) uses the signals from the throttle position sensor, airflow meter, input turbine speed sensor, output speed sensor, and crankshaft position sensor to monitor the engagement condition of the lock-up clutch. Common causes include Faulty Torque Converter Clutch Pressure Control Solenoid (Shift Solenoid Valve SLU), Torque Converter Clutch Pressure Control Solenoid harness is open or shorted, Torque Converter Clutch Pressure Control Solenoid circuit poor electrical connection. 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: P2757 Scion indicates Torque Converter Clutch Pressure Control Solenoid Performance Shift Solenoid Valve SLU.
Common causes: Common causes include Faulty Torque Converter Clutch Pressure Control Solenoid (Shift Solenoid Valve SLU), Torque Converter Clutch Pressure Control Solenoid harness is open or shorted, Torque Converter Clutch Pressure Control Solenoid circuit poor electrical connection.
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 657

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 Sep 18, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
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Code P2757 Scion Description

The Engine Control Module (ECM) uses the signals from the throttle position sensor, airflow meter, input turbine speed sensor, output speed sensor, and crankshaft position sensor to monitor the engagement condition of the lock-up clutch.
The ECM compares the engagement condition of the lock-up clutch with the lock-up schedule in the ECM memory to detect mechanical problems of the shift solenoid valve (SLU), valve body, and torque converter.
Torque converter lock-up is controlled by the ECM based on the input turbine speed sensor (speed sensor NT), output speed sensor (speed sensor NC), engine speed, engine load, engine temperature, vehicle speed, ATF temperature and gear selection. The ECM determines the lock-up status of the torque converter by comparing the engine speed (NE) to the input turbine speed (NT). The ECM calculates the actual transmission gear by comparing the input turbine speed (NT) to the output shaft speed (NC). When conditions are appropriate, the ECM requests lock-up by applying control voltage to shift solenoid valve SLU. When shift solenoid valve SLU is turned on, it applies pressure to the lock-up relay valve and locks the torque converter.
If the ECM detects no lock-up after lock-up has been requested or if it detects lock-up when it is not requested, the ECM interprets this as a fault in shift solenoid valve SLU or lock-up system performance.
The ECM will turn on the MIL and store the Diagnostic Trouble Code (DTC).

OBDII Code P2757 Scion - Torque Converter Clutch Pressure Control Solenoid Performance Shift Solenoid Valve SLU - AutoCodes.com — P2757 Scion Code - Torque Converter Clutch Pressure Control Solenoid Performance Shift Solenoid Valve SLU

What does this mean?

What are the Possible Causes of the DTC P2757 Scion?

Faulty Torque Converter Clutch Pressure Control Solenoid (Shift Solenoid Valve SLU)
Torque Converter Clutch Pressure Control Solenoid harness is open or shorted
Torque Converter Clutch Pressure Control Solenoid circuit poor electrical connection
Faulty Torque Converter Assembly

How to Fix the DTC P2757 Scion?

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 P2757 Scion 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 P2757 Scion Code

1. What does the OBDII code P2757 mean for a Scion?

P2757 indicates an issue with the Torque Converter Clutch Pressure Control Solenoid, specifically its performance, which may impact the operation of the torque converter and transmission.

2. What are the common symptoms of code P2757 in a Scion?

Symptoms can include slipping transmission, poor fuel efficiency, delayed shifting, engine stalling, and the check engine light turning on.

3. What causes the P2757 code to appear in a Scion?

Typical causes include a faulty torque converter clutch solenoid, dirty transmission fluid, internal transmission issues, or wiring/connectivity problems.

4. Can driving with the P2757 code damage my Scion?

Yes, driving with this code can lead to increased wear on the transmission and torque converter, potentially resulting in more extensive and costly repairs.

5. How can I fix the P2757 code on my Scion?

Repairs may involve replacing the torque converter clutch solenoid, flushing and replacing the transmission fluid, inspecting wiring and connections, or addressing internal transmission problems.

6. How do I know if the torque converter clutch solenoid is faulty?

A faulty solenoid may cause erratic shifting, transmission overheating, or failure to lock the torque converter properly, which can trigger the P2757 code.

7. Can low transmission fluid cause the P2757 code in a Scion?

Yes, low or contaminated transmission fluid can affect solenoid performance and lead to this code.

8. How much does it cost to repair the P2757 code on a Scion?

Costs vary depending on the repair needed, ranging from $150 to $400 for solenoid replacement and up to $3,000 for major transmission repairs.

9. Can I clear the P2757 code without fixing the issue?

Clearing the code without addressing the underlying problem will only temporarily remove the warning and could lead to recurring issues or further damage.

10. Is the P2757 code related to other transmission problems?

Yes, this code may be linked to other transmission codes or issues, such as solenoid malfunctions or torque converter damage, which should be addressed promptly.