Faulty torque converter clutch solenoid; Damaged or corroded wiring or connector at the transmission; Open or short circuit in the TCC solenoid wiring harness; Failed transmission control module (TCM) or PCM driver; Low or contaminated transmission fluid causing solenoid malfunction; Internal transmission mechanical issue affecting the TCC circuit

DTC codes / Ford codes / P1767

P1767 · FordTorque Converter Clutch Circuit Malfunction

Q: What does code P1767 mean?

Torque Converter Clutch Circuit Malfunction. P1767 on a Ford vehicle indicates that the powertrain control module (PCM) has detected an electrical fault in the torque converter clutch (TCC) solenoid circuit. The PCM monitors the circuit for expected voltage or current and sets this code when the signal is out of range, which can prevent the clutch from engaging or disengaging properly.

P1767 on a Ford vehicle indicates that the powertrain control module (PCM) has detected an electrical fault in the torque converter clutch (TCC) solenoid circuit. The PCM monitors the circuit for expected voltage or current and sets this code when the signal is out of range, which can prevent the clutch from engaging or disengaging properly.

SystemPowertrain

Code typeFord specific

SeverityMedium

Fix difficultyIntermediate

AreaTransmission

Symptoms you may notice

Illumination of the check engine light, often with no other noticeable symptoms
Harsh or delayed transmission shifts, especially when the converter clutch is commanded
The engine may shudder or surge at steady highway speeds when the clutch tries to engage
Poor fuel economy due to the clutch failing to lock up
Transmission may slip or feel like it is in neutral during certain driving conditions
In some cases, the transmission may enter limp mode with harsh engagement

Common causes, most likely first

Faulty torque converter clutch solenoid
Damaged or corroded wiring or connector at the transmission
Open or short circuit in the TCC solenoid wiring harness
Failed transmission control module (TCM) or PCM driver
Low or contaminated transmission fluid causing solenoid malfunction
Internal transmission mechanical issue affecting the TCC circuit

How to diagnose and fix it

Check transmission fluid level and condition; top off or replace if contaminated
Inspect the TCC solenoid connector and wiring for damage, corrosion, or loose pins
Measure resistance of the TCC solenoid and compare to factory specification
Test the circuit for continuity and shorts between the PCM and solenoid
Replace the TCC solenoid if resistance is out of spec or the solenoid fails a functional test
Repair or replace damaged wiring or connectors as needed
Clear the code and perform a road test to verify the repair

TCC circuit faults often misdiagnosed

A common mistake is replacing the transmission entirely when the issue is simply a chafed wire near the bell housing or a corroded connector.
The TCC solenoid shares power or ground with other solenoids on some Ford models, so a fault in a shared circuit can set P1767 along with other codes.
Low transmission fluid or a clogged filter can cause the solenoid to malfunction electrically, so always check fluid condition before condemning the solenoid.
On some Ford vehicles, the PCM may set P1767 if the TCC clutch is mechanically stuck, even when the electrical circuit is intact.
A faulty brake pedal switch can prevent TCC lockup and set a related code, so verify brake switch operation if the clutch never engages.

Can I keep driving with P1767?

You can usually drive the vehicle with this code, but avoid heavy acceleration and highway speeds if the transmission shifts harshly or slips. Prolonged driving with a faulty TCC circuit can lead to transmission damage, so schedule a diagnosis soon.

Tools that help

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