P0743Torque converter clutch solenoid: electrical fault

• Hyundai/Kia code · Transmission
• Turns on the check-engine light

How the car detects it

The solenoid that controls the converter lock-up clutch has an electrical fault. The transmission may go into a fail-safe gear. Check the wiring between computer and transmission before the solenoid or valve body.

What you may notice

• Check-engine light
• Harsh shifts or stuck in one gear

Likely causes

• PossibleThe solenoid
• PossibleValve-body internal harness or the external transmission harness
• RareEngine/transmission computer

Sources

• static.nhtsa.gov › SB-10059670-2273.pdf · official document
• static.nhtsa.gov › MC-10253275-0001.pdf · official document

Backed by an official manufacturer document.

From Obdaryn's Hyundai/Kia pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.