I have a 2007 Toyota Corolla CE with only 80,000 miles. The Check Engine Light come on with error code P0741. I reset code by disconnect Battery. 1) I changed the Trans. oil with OEM toyota Type iv 3 times and the CEL still on once a while. 2) I dropped the pan and replace the transmission filter and replace the TCC lock up solenoid made by Rostra. 3) I check the old TCC solenoid and it is working except it has little dirt on the screen. 4) The CEL still on after all the above works. 5) Today, I reset again and then I use LubeGard and CEL come on again after freeway driving 50-60 mph. I don’t think it is the dirty fluid and solenoid because Trans. Fluid is very clean now and old solenoid actually working (test with click sound); however, I replaced with new one. I test the new solenoid before I replace it. I check recall on ECU software but only recall is for 2004 and 2005 Toyota Corolla (not 2007). Anyone knows what’s going on? Thanks, Tony.