P0740

2017-10-10

Description:

  • The fault code P0740 indicates that there is an issue with the torque converter clutch circuit, which may cause a number of drivability issues. The torque converter clutch is responsible for transferring the engine's power to the transmission, and if it is not working properly, the vehicle may experience poor performance or even failure to operate.

Possible Symptoms:

  • Engine stalling or hesitation

  • Poor acceleration

  • Transmission slipping or shifting poorly

  • Illuminated check engine light

Possible Causes:

  • Malfunctioning torque converter clutch solenoid

  • Failed torque converter clutch assembly

  • Damaged or frayed wiring in the circuit

  • Loose or corroded electrical connections

  • Failed transmission control module (TCM)

Related Parts:

  • Torque Converter Clutch: The torque converter allows shifting gears in an automatic transmission. It is the equivalent of a clutch in manual transmission system. The torque converter clutch creates a connection between the engine output and the transmission input. Problem leads to decreased fuel economy

Possible Solutions:

  • Replace the torque converter clutch solenoid

  • Replace the torque converter clutch assembly

  • Repair or replace any damaged or frayed wiring in the circuit

  • Tighten or clean any loose or corroded electrical connections

  • Replace the transmission control module (TCM) if necessary

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