Torque Converter Clutch Solenoid Valve harness or connectors
Torque Converter Clutch Solenoid Valve circuit is open or shorted
Transmission valve body assembly is blocked
Torque converter assembly
Transmission internal mechanical problem
|How to Fix the P0741 Toyota Code?
Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
|What is the Cost to Diagnose the Code P0741 Toyota?
The cost to diagnose the P0741 Toyota code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
Engine Light ON (or Service Engine Soon Warning Light)
|What Does the P0741 Toyota Code Mean?
Torque converter lock-up is controlled by the Engine Control Module (ECM) based on speed sensor NT, speed sensor NC, engine speed, engine load, engine temperature, vehicle speed, ATF temperature, and gear selection. The ECM determines the lock-up status of the torque converter by comparing the engine speed (NE) to the input turbine speed (NT). The ECM calculates the actual transmission gear by comparing the input turbine speed (NT) to the counter gear speed (NC). When conditions are appropriate, the ECM requests lock-up by applying a control voltage to shift solenoid valve SL. When the shift solenoid valve SL is turned on, it applies pressure to the lock-up relay valve and locks the torque converter.
If the ECM detects no lock-up after lock-up has been requested or if it detects lock-up when it is not requested, the ECM interprets this as a fault in shift solenoid valve SL or lock-up system performance. The ECM will turn on the MIL and store the Diagnostic Trouble Code (DTC).
Torque Converter Clutch Solenoid Performance