Torque Converter Clutch Circuit Low
The P2769 code indicates that the powertrain control module (PCM) has detected a low voltage condition in the torque converter clutch (TCC) circuit. This typically occurs when the TCC solenoid or its wiring has a short to ground, high resistance, or an open circuit. The TCC solenoid controls the lockup of the torque converter, which improves fuel economy and reduces transmission heat. A low circuit condition can prevent the TCC from engaging properly, leading to drivability issues.
01. Most Common Causes
- Faulty torque converter clutch solenoid
- Open or shorted wiring in the TCC circuit
- Poor electrical connection at the solenoid or PCM
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Poor fuel economy
- Transmission slipping or shuddering at highway speeds
- Delayed or harsh shifting
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Visually inspect the TCC solenoid wiring and connector for damage, corrosion, or loose pins.
Step 3: Test the TCC solenoid resistance with a multimeter (typically 10-30 ohms).
Step 4: Check for voltage at the solenoid connector with the engine running (should see battery voltage when commanded on).
Step 5: If wiring and solenoid are good, test the PCM output circuit for continuity and shorts.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances. The TCC may not lock up, causing increased transmission heat and potential damage. Short trips to a repair shop are acceptable.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts and labor. The TCC solenoid itself is often $50-$150, with labor adding $100-$250 depending on vehicle accessibility.