P2757 Code: Torque Converter Clutch Pressure Control Solenoid Performance/Stuck Off

What the P2757 code means

In automatic transmissions, pressure control solenoids regulate the oil pressure that applies each clutch. The transmission computer drives them with variable current so the shifts feel smooth.

The computer watches the control circuit from its own driver transistor. The P2757 code reports that the component responds electrically but the result is not what is expected. Before you replace the component, check the fuse, relay, connector and wiring, which are the most common cause.

The solenoids sit inside the transmission, in the valve body. Dirt in the fluid wears them down and makes them stick.

This kind of fault does not usually give itself up to a multimeter, because electrically everything looks right. You have to compare what the part says with reality: use a gauge, a thermometer or a tachometer, or command the component with the scan tool and see whether the physical result matches the command.

P2757 code symptoms

• Check engine light or another warning light on.
• Vibration at steady speed, high fuel use and a high transmission fluid temperature.

Likely causes of the P2757 code

1. Dirty or low transmission fluid. Check the level, the condition and the viscosity.
2. Solenoid stuck by dirt.
3. Worn valve body. Check it by commanding it with the scan tool.
4. Transmission software. Ask whether the manufacturer released an update.

How to diagnose the P2757 code step by step

1. Command the component with the scan tool and check whether it responds.
2. Check the fuse and relay. Measure voltage on both sides of the fuse and swap the relay with an identical one.
3. Measure the supply at the connector: battery voltage with the key on or when it is commanded.
4. Measure the component resistance and compare it with the manual, and check the insulation to ground too.
5. Check the control wire: continuity to the computer and no short circuits.

How to fix the P2757 code

• Repair the connector, the wiring or the supply.
• Replace the torque converter clutch pressure solenoid if it does not respond with correct supply and command.
• Clear the codes and verify.

Technical reference data

• Typical pressure solenoid resistance: 3 to 8 ohms.
• Always check the transmission fluid level and condition first.
• Approximate values only: check the manufacturer data for your vehicle.

Brand-specific notes

A torque converter clutch that does not apply cleanly shows up as a shudder at steady speed. Check the fluid before anything else when you chase the P2757 code.

P2757 on Ford

Common on Ford transmissions such as the 6R80 and the 6F35.

P2757 on GM

Common on GM transmissions such as the 6T40 and the 6L80.

P2757 on Hyundai and Kia

Common on Hyundai and Kia, such as the A6 transmission.

P2757 on Nissan and Toyota

Also common on Nissan and Toyota.

Frequently asked questions about P2757