P2757 indicates that the torque converter clutch (TCC) pressure control solenoid circuit is not responding as expected and remains in the off state. The transmission control module (TCM) detects that the solenoid voltage or current does not change when commanded, suggesting a performance fault in the solenoid or its control circuit.
The solenoid itself can become stuck closed or develop an internal open circuit, preventing proper hydraulic pressure modulation.
Frayed wires, corroded pins, or loose connectors can interrupt the control signal or power supply to the solenoid.
A defective driver transistor inside the TCM may fail to switch the solenoid on, mimicking a stuck‑off condition.
Insufficient or dirty fluid can affect solenoid operation and cause the TCM to register a performance fault.
Rarely, a loss of data between the powertrain control module and the TCM can cause the TCM to misinterpret solenoid status.
No. The PCM/ECM is rarely the root cause; most often the fault lies in the solenoid, its wiring, or the TCM driver. PCM replacement should only be considered after all other components have been verified.
Yes. Low or degraded fluid can prevent the solenoid from building proper pressure, leading the TCM to set a performance fault.
Typically not. The transmission may slip, shift harshly, or enter a limited‑performance mode, reducing drivability and fuel efficiency.
Clearing the code only removes the stored fault; the underlying hardware issue will cause the code to return unless the faulty component or circuit is repaired.