P0740 Torque Converter Clutch Circuit

Powertrain Severity: Moderate Generic OBD-II

Electrical fault in the torque converter clutch circuit.

Common causes

  • Faulty TCC solenoid
  • Wiring damage

Symptoms

  • Higher rpm at cruise
  • Poor fuel economy

What to check

  1. Check solenoid circuit
  2. Inspect connector

Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0740, follow the service information for that make and model.

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