P2769

Converter Clutch Circuit Low

P2769 is a generic OBD-II powertrain diagnostic trouble code: Converter Clutch Circuit Low. It is logged by the engine control unit when the powertrain monitor detects that a specific fault threshold has been exceeded — typically resulting in the malfunction-indicator lamp (MIL / check-engine light) being illuminated.

Code
P2769
Group
Powertrain
System
Powertrain
Severity
Warning (MIL on, possible limp mode)
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What P2769 means

P2769 indicates that the TCM has detected an abnormally low voltage or current on the torque converter clutch (TCC) apply solenoid control circuit. The TCC solenoid controls hydraulic pressure to engage or disengage the mechanical lock-up clutch inside the torque converter, which eliminates slippage at highway speeds to improve fuel economy and reduce heat.

When the TCM commands TCC engagement and the circuit voltage drops below the programmed threshold, the module sets P2769. In many calibrations the TCM will disable TCC operation entirely until the fault is repaired, which increases fuel consumption and torque converter operating temperature on extended highway driving.

Diagnosis should start with visual inspection of the TCC solenoid wiring harness and connector, followed by resistance and voltage measurements. A shorted solenoid, chafed wire, or corroded connector are the most frequent root causes. TCM failure is possible but uncommon and should only be considered after eliminating all external circuit faults.

Common causes

Most-frequently reported root causes when P2769 is logged.

  • 1
    Short to ground on the TCC solenoid control wire.
  • 2
    Corroded or damaged transmission wiring harness connector.
  • 3
    Internally shorted TCC solenoid coil.
  • 4
    Damaged wiring insulation causing intermittent short to ground.
  • 5
    Faulty TCM output driver stage.
  • 6
    Low transmission fluid level causing solenoid overheating and coil failure.
  • 7
    Water intrusion into the transmission connector causing tracking short.

Symptoms drivers notice

MIL illuminated.
Torque converter clutch does not engage at highway speeds.
Reduced fuel economy, especially on the highway.
Elevated transmission fluid temperature.
Slight engine RPM flare when converter clutch should be locking.

How to diagnose P2769

A typical diagnostic flow when this code is present.

  1. 1
    Retrieve all DTCs and note any related transmission or TCC codes stored alongside P2769.
  2. 2
    Inspect the transmission harness and external connector for corrosion, spread pins, or physical damage.
  3. 3
    Measure TCC solenoid resistance at the transmission connector; compare to manufacturer specification.
  4. 4
    With the TCM connector unplugged, check for a short to ground on the TCC control wire.
  5. 5
    Use a scan tool to command TCC engagement and observe circuit current feedback if the TCM supports it.
  6. 6
    Check transmission fluid level and condition, as low or degraded fluid can cause solenoid anomalies.
  7. 7
    Replace the TCC solenoid or repair wiring faults before considering TCM replacement.

Related powertrain codes

Frequently asked questions

What happens if the torque converter clutch never locks up?

The vehicle will still drive, but fuel economy will decrease and the torque converter will run hotter than designed, potentially shortening its service life.

Can a bad TCC solenoid cause shudder?

Yes, but shudder is more commonly associated with a TCC that partially engages. A circuit-low fault typically prevents engagement rather than causing partial slip.

Is P2769 the same as P0741?

No. P0741 indicates TCC performance or stuck-off based on slip speed monitoring, while P2769 is a circuit-level electrical fault detected by the TCM driver.

Can I replace just the solenoid without dropping the transmission?

On many vehicles the TCC solenoid is accessible by removing the transmission oil pan and valve body. Consult the vehicle-specific service manual for the procedure.

Disabling P2769 in software

RaceTune can permanently disable P2769 — and any other OBD-II diagnostic trouble code — on every ECU family we support. The monitor is disabled inside the ECU itself, so the fault stops being logged: the warning light stays off and the engine never enters limp mode for this code. The change is tied to your exact software version.

Permanent
The monitor is disabled in the ECU itself — not just cleared. It cannot return.
Tailored to your file
Each patch is matched to your specific software version — never a one-size-fits-all file.
Reversible
The original file is always preserved. Reflash the stock to return the ECU to factory state.

Software modifications affect emissions compliance and are not road-legal in many jurisdictions. RaceTune service files are intended for motorsport, off-road, and export use.

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