AutoCodes – Generic – P2757

P2757 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 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 37,695

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

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?

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 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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Information for Specific Makes

P2757 Dodge — Torque Converter Clutch Pressure Control Solenoid Control Circuit Performance/Stuck Off
P2757 Lexus — Torque Converter Clutch Pressure Control Solenoid Performance Shift Solenoid Valve SLU
P2757 Scion — Torque Converter Clutch Pressure Control Solenoid Performance Shift Solenoid Valve SLU
P2757 Toyota — Torque Converter Clutch Pressure Control Solenoid Performance Shift Solenoid Valve SLU

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.