P0743 OBD II Trouble Code Torque Converter Clutch (TCC) Solenoid Circuit Electrical

Detailed information on diagnosing and repairing a P0743 DTC code which refers to an electrical failure in the TCC circuit.

Symptoms of P0743 OBD II Trouble Code

  • Malfunction indicator illumination (check engine light or service engine soon light)
  • Stalling when coming to a stop after cruising speeds
  • Shudder on take off
  • Shudder when coming to a stop

Common Causes of P0743 OBD II Trouble Code

  • Low or dirty transmission fluid
  • Wire/circuit issue shorted to power or ground
  • Failed torque converter clutch (TCC) solenoid
  • Failed TCC assembly in the torque converter
  • Failed PCM/ECM/EMC