P2769 indicates that the Powertrain Control Module has detected a low voltage condition in the torque converter clutch (TCC) control circuit. This usually means the TCC solenoid is not receiving enough power to engage the clutch properly.
The solenoid that controls the torque converter clutch can fail electrically, causing low circuit voltage.
Damaged wiring, corroded pins, or a loose connector in the TCC circuit can create resistance and drop voltage.
Mechanical failure inside the torque converter can increase load on the solenoid, pulling the voltage down.
Insufficient system voltage under load can cause the TCC circuit voltage to fall below the required threshold.
Rarely, the PCM’s driver circuit for the TCC solenoid can fail, but this is a last‑resort possibility after other checks.
No. Replacing the PCM is almost never the correct fix for P2769. The code is overwhelmingly caused by wiring or the TCC solenoid itself. PCM replacement should be a last resort after thorough testing.
A failing TCC solenoid can cause harsh shifting and stall, but it typically does not trigger limp mode unless it creates other severe drivetrain faults.
Driving with a low‑voltage TCC circuit can lead to reduced performance, higher fuel consumption, and possible stall under load. It is advisable to diagnose and repair the issue promptly.
Yes. If the battery or alternator cannot maintain proper system voltage, the TCC circuit may see low voltage and set the code. A load test can confirm this condition.