P2757: Torque Converter Clutch Pressure Control Solenoid Control Circuit Perform… — what it means, the affected system and what to check before replacing parts.
Meaning, symptoms, causes and checks
Torque Converter Clutch Pressure Control Solenoid Control Circuit Performance/Stuck Off. Basic catalogue definition; diagnostic details have not yet been reviewed.
Affected system: Powertrain
Symptoms
- A transmission or engine warning may accompany delayed or harsh shifting.
- When converter lockup is unreliable, cruising engine speed may remain higher and fuel economy may worsen.
Possible causes
- The torque-converter-clutch pressure-control solenoid may fail to respond or remain stuck off.
- A damaged harness, poor connection, unsuitable transmission-fluid condition or valve-body issue may contribute.
What to check
- Confirm P2757 and companion transmission codes; examine converter-lockup information with a suitable scan tool.
- Check transmission-fluid condition and level according to the vehicle-specific procedure, then inspect accessible connectors.
- Compare solenoid control and circuit measurements with service specifications before investigating the valve body or converter.
Also written as: P2757-00, P275700 (some scan tools add the fault-type byte, e.g. -00).