SOURCE: This code PO741 is the
Any transmission issue ,needs immediate attention
I never recommend even using the vehicle, until resolved
SOURCE: Toyota 2009 P2770 Open in Torque Converter how to repair?
Since this code in most cases requires the torque converter be replaced I would spend the money to have the dealer confirm this the problem. The torque converter can only be serviced by removing the transmission.
SOURCE: Hi there. My check engine light just started
code p0741 refers to the torque converter clutch(TCC) solenoid--performance or stuck off===causes --Wiring-- TCC solenoid. The engine light is telling you that the cpu has found sensors that are out side of set parameters logged in the cpu program. The problem will be in the TCC solenoid either failed or the wiring connectors are dirty or have water in the connection. The fault refers to the unit and not the internals of the gear box which would have showed up with other fault codes.
well my transmission officially blew up due to the torque converter. I suggest dropping the transmission pan then taking the solenoids out and cleaning the hell out of them, drain as much trans fluid as possible and replace the gasket and filter. Replace the trans pan after putting all the solenoids back into place I also suggest using Lucas Stop Slip Trans Fix when refilling the fluid. DO NOT OVERFILL AND DO NOT UNDERFILL. Take your time on putting new good fluid in not cheap stuff. If all this doesn't work or make a change then the next step is to replace your torque converter. This in involves taking the transmission out pulling the T converter out and replacing it you also have to do a fluid change regardless even after you try changing it the first time to see if it fixed your issue. Any shavings inside the torque converter will contaminate your new fluid if the first fluid change doesn't work therefore 2 fluid changes would be necessary if you don't solve the issue the 1st time after cleaning the solenoids. Try these steps and get back to me and we will go from there. I hope this helps as a brand new transmission is 4,000 dollars. Good luck and keep me posted.
P0700 Transmission Control System
P0701 Transmission Control System Range/Performance
P0702 Transmission Control System -Electrical
P0703 Torque Converter/Brake Switch B Circuit
P0704 Clutch Pedal Position Switch -Circuit Malfunction
P0705 Transmission Range Sensor/Switch Circuit Malfunction (PRNDL Input)
P0706 Transmission Range Sensor/Switch Circuit Range/Performance
P0707 Transmission Range Sensor/Switch Circuit Low Input
P0708 Transmission Range Sensor/Switch Circuit High Input
P0709 Transmission Range Sensor/Switch Circuit intermittent
P0710 Transmission Fluid Temperature Sensor Circuit
P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712 Transmission Fluid Temperature Sensor Circuit Low Input
P0713 Transmission Fluid Temperature Sensor Circuit High Input
P0714 Transmission Fluid Temperature Sensor Circuit Intermittent
P0715 Input/Turbine Speed Sensor Circuit
P0716 input/Turbine Speed Sensor Circuit Range/Performance
P0717 Input/Turbine Speed Sensor Circuit No Signal
P0718 Input/Turbine Speed Sensor Circuit Intermittent
P0719 Torque Converter/Brake Switch B Circuit Low
P0720 Output Shaft Speed Sensor Circuit
P0721 Output Shaft Speed Sensor Circuit Range/Performance
P0722 Output Shaft Speed Sensor Circuit No Signal
P0723 Output Shaft Speed Sensor Circuit Intermittent
P0724 Torque Converter/Brake Switch B Circuit High
P0725 Engine RPM Input Circuit
P0726 Engine RPM Input Circuit Range/Performance
P0727 Engine RPM Input Circuit No Signal
P0728 Engine RPM Input Circuit Intermittent
P0729 Gear 6 Incorrect Ratio
P0730 Incorrect Gear Ratio
P0731 Gear 1 Incorrect Ratio
P0732 Gear 2 Incorrect Ratio
P0733 Gear 3 Incorrect Ratio
P0734 Gear 4 Incorrect Ratio
P0735 Gear 5 Incorrect Ratio
P0736 Reverse Incorrect Ratio
P0737 TCM Engine Speed Output Circuit
P0738 TCM Engine Speed Output Circuit Low
P0739 TCM Engine Speed Output Circuit High
P0740 Torque Converter Clutch Solenoid Circuit
P0741 Torque Converter Clutch Solenoid Circuit Performance or Stuck Off
P0742 Torque Converter Clutch Solenoid Circuit Stuck On
P0743 Torque Converter Clutch Solenoid Circuit Electrical
Now i dont know a lot about automatics especially modern ones with all this fancy electronics thats used nowdays but i think its a fault with the temperature sensor for the gearbox.But where its located and what it looks like i have no idea it could even be mounted inside the gearbox .Sorry not a very good answer from a mechanic but?? very few of our europeon cars come with auto transmission .Evan when i do know whats wrong i cannot buy the parts for the gearbox as only re-con boxes supplied by the dealer so best advice is to try a specialist in auto box repairs only .PS some of my best students when i used to teach mechanics many moons ago were the girls so no excuses like iam only a girl please
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