P0740

Torque Converter Clutch Circuit/Open

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Increased fuel consumption
Gear shifting problems
Vibration when driving
Check Engine Light Illuminates
Reduced acceleration dynamics

Causes

Broken or damaged control circuit wiring
Engine blocking solenoid malfunction
Low transmission fluid level
Mechanical damage to the torque converter
Problems with the transmission control unit

How to Fix

Check the level and condition of the transmission fluid
Inspect the wiring harness for damage
Check the resistance of the gas turbine engine blocking solenoid
Scan the transmission control module for additional codes
If necessary, replace the solenoid or torque converter

Related codes

P0741 P0742 P0743