DTC : P0741 (6-Speed A/T) (2016 2017 2018 2019 2020): General Description

Courtesy of HONDA, U.S.A., INC.

The power transfer capacity of the torque converter clutch is controlled by the balance of automatic transmission fluid (ATF) supplied to and discharged from the torque converter clutch and the torque converter. When hydraulic pressure supplied to the torque converter clutch is less than the torque converter internal pressure, lock up is off. When hydraulic pressure supplied to the torque converter clutch is greater than the torque converter internal pressure, lock up is on. As the hydraulic pressure supplied to the torque converter clutch is increased, the power transfer capacity of the torque converter clutch is increased. The supply of hydraulic pressure is switched by shift solenoid valve C and the lock-up shift valve. When the powertrain control module (PCM) turns on shift solenoid valve C, the hydraulic pressure is supplied to the torque converter clutch. When the PCM turns off shift solenoid valve C, the hydraulic pressure is not supplied to the torque converter clutch. The balance of hydraulic pressure supplied to the torque converter clutch and the torque converter is controlled by A/T clutch pressure control solenoid valve D and the lock-up control valve. When the PCM turns on A/T clutch pressure control solenoid valve D, the power transfer capacity of the torque converter clutch is at its maximum. When the PCM turns off A/T clutch pressure control solenoid valve D, the power transfer capacity of the torque converter clutch is at its minimum. If the ratio of engine speed and input shaft (mainshaft) speed is not about 1:1 while the PCM is issuing the command to turn shift solenoid valve C and A/T clutch pressure control solenoid valve D on, the PCM detects a malfunction and stores a DTC.