What Does P2764 Mean?
The TCM has detected an abnormally low voltage in the torque converter clutch pressure control solenoid circuit. This suggests a short to ground, excessive resistance, or solenoid internal failure preventing proper clutch engagement control.
Common Causes
35%
Short to ground in wiring harness between TCM and TCC solenoid
30%
Failed torque converter clutch pressure control solenoid (internal short to ground)
20%
Damaged or corroded connector causing high resistance
15%
TCM internal driver circuit failure
Diagnostic Steps
1
Step 1: Visually inspect transmission wiring harness for chafing, damage, or contact with hot/sharp surfaces
2
Step 2: Disconnect TCC pressure control solenoid and measure resistance to ground from both solenoid terminals (should read open/infinite resistance)
3
Step 3: Check harness side connector for voltage with key on (should show battery voltage with solenoid commanded on)
4
Step 4: Perform insulation resistance test on wiring between TCM and solenoid to locate short to ground
5
Step 5: Monitor solenoid command vs actual current draw with scan tool to identify TCM driver issues
Estimated Repair Cost
$200 - $1,200
Parts + labor, varies by vehicle and location
The TCM has detected an abnormally low voltage in the torque converter clutch pressure control solenoid circuit. This suggests a short to ground, excessive resistance, or solenoid internal failure preventing proper clutch engagement control.
The most common cause of P2764 (Torque Converter Clutch Pressure Control Solenoid Control Circuit Low) is: Short to ground in wiring harness between TCM and TCC solenoid
Typical repair costs for P2764 range from $200 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May cause delayed or no torque converter lockup, leading to reduced fuel economy and potential transmission overheating. Safe for limited driving but prolonged operation may damage transmission components.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2764 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
