Engine-Codes
 
OBDII Code List
 
P0740 CHEVROLET

P0740 CHEVROLET - Torque Converter Clutch Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

Possible causes

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty torque converter clutch solenoid valve
  • Torque converter clutch solenoid valve harness is open or shorted
  • Torque converter clutch solenoid valve circuit poor electrical connection
  • When is the code detected?

    When the PCM detects a continuous open, short to ground or short to power in the TCC solenoid valve circuit, then DTC P0740 sets.

    Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Transmission shift shock
  • Vehicle may not shift into the highest gear
  • P0740 Chevrolet Description

    The Torque Converter Clutch (TCC) solenoid valve is an electrical device that is used with the torque converter clutch pulse width modulation (TCC PWM) solenoid valve in order to control TCC apply and release. The TCC solenoid valve attaches to the transmission case assembly extending into the pump cover. The Powertrain Control Module (PCM) controls the solenoid by providing the ground path. The PCM monitors the throttle position (TP) voltage, the vehicle speed and other inputs in order to determine when to energize the TCC solenoid valve.
    OBDII Code P0740 Chevrolet - Torque Converter Clutch Malfunction - Engine-Codes.com

    Related Information

    Repair Importance Level: 3
     
    1=Low 2=Medium 3=High  
    Repair Difficulty Level: 3
     
    1=Easy 2=Moderate 3=Hard  

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