How to fix P0743 Code: Torque Converter Clutch Solenoid Circuit Electrical
A torque converter is used with automatic transmissions, which uses fluid to connect the engine and transmission.
A P0743 code is set when the computer (ECM/PCM) detects an electrical issue with the torque converter clutch (TCC) solenoid or its circuit.
A Torque Converter Clutch Solenoid can also be called a Variable Force Solenoid.
The Torque Converter Clutch (TCC) locks the engine to the transmission, which reduces slippage and increases efficiency.

Possible Causes of a P0743 Code:
Low or Dirty Transmission Fluid
Bad Torque Converter Clutch Solenoid
Wiring Problem
Bad Torque Converter
Mechanical Problems (Clogged or Restricted Hydraulic Passages, Bad Valve Body)

Links to Paid Vehicle Info, Schematics, Diagrams, Repair Manuals, and More

Emanuals Online has automotive repair manuals that can be bought and viewed immediately on a computer.
(Likely best for home DIY person with 1-2 vehicles)
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All Data (Professional and DIY sections)
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Mitchell Pro Demand (Professional)
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