P0743

Torque Converter Clutch Circuit Electrical

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 blocking the gas turbine engine
Check Engine Light Illuminates
Reduced acceleration dynamics

Causes

Engine blocking solenoid malfunction
Open or short circuit in the circuit
Poor contact in connectors
Low transmission fluid level
Mechanical transmission problems

How to Fix

Check the level and condition of the transmission fluid
Diagnose the solenoid control circuit
Check the resistance of the lock solenoid
Inspect the wiring harness and connectors
If necessary, replace the gas turbine blocking solenoid

Related codes

P0740 P0741 P0742