Open circuit in the TCC solenoid coil or its internal wiring; Short to voltage on the control wire between the TCM and the solenoid; Faulty TCM driver for the TCC solenoid circuit; Corroded or damaged connector pins at the solenoid or TCM; Damaged wiring harness (chafed, pinched, or heat-damaged) causing a short to power; Internal transmission fluid contamination causing solenoid malfunction

DTC codes / P27xx · Transmission / P2763

P2763Torque Converter Clutch Pressure Control Solenoid Control Circuit High

P2763 indicates that the transmission control module (TCM) has detected an abnormally high voltage on the torque converter clutch (TCC) pressure control solenoid control circuit. This typically means the solenoid coil is open, the control wire is shorted to voltage, or the TCM driver is faulty, preventing proper lockup of the torque converter.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaTransmission

Symptoms you may notice

Illumination of the check engine light (malfunction indicator lamp) with no other noticeable symptoms
Harsh or delayed engagement of the torque converter clutch, felt as a shudder or slip during light acceleration
Poor fuel economy due to the converter remaining unlocked
Transmission may enter limp mode or default to a fixed gear
In some cases, the engine may stall when coming to a stop if the converter stays locked

Common causes, most likely first

Open circuit in the TCC solenoid coil or its internal wiring
Short to voltage on the control wire between the TCM and the solenoid
Faulty TCM driver for the TCC solenoid circuit
Corroded or damaged connector pins at the solenoid or TCM
Damaged wiring harness (chafed, pinched, or heat-damaged) causing a short to power
Internal transmission fluid contamination causing solenoid malfunction

How to diagnose and fix it

Scan all modules for stored codes and freeze-frame data to confirm P2763 is active and not intermittent
Inspect the TCC solenoid connector and TCM connector for corrosion, loose pins, or fluid intrusion
Measure resistance of the TCC solenoid with a multimeter and compare to manufacturer specification
Check the control wire for continuity and for short to voltage with the ignition on, using a wiring diagram
If the circuit tests good, substitute a known-good TCM or perform a driver test with a bidirectional scan tool
Replace the TCC solenoid if resistance is out of spec or the coil is open
Clear codes and perform a road test to verify the repair and ensure the converter clutch engages smoothly

What the voltage reading really tells you

A high voltage code often means the solenoid coil is open, so the TCM sees full supply voltage on the control circuit instead of the expected voltage drop across the coil.
A short to voltage on the control wire can be caused by harness chafing against a metal bracket or heat shield, which is easily missed if only the solenoid is replaced.
Some vehicles set P2763 when the TCM driver fails, but the solenoid itself tests good; always verify the TCM can command the solenoid on and off with a scan tool.
Contaminated transmission fluid can cause the solenoid to stick mechanically, but that usually sets a performance code rather than a high voltage code, so do not assume fluid is the root cause.
Intermittent P2763 can be caused by a poor ground connection at the transmission case, which raises the reference voltage seen by the TCM.

Can I keep driving with P2763?

You can usually drive the vehicle with P2763, but the torque converter clutch may not lock up, reducing fuel economy and increasing transmission heat. Avoid heavy towing or sustained high-speed driving until the fault is repaired, and if the transmission enters limp mode, seek service promptly.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.