I originally posted this under Aux fan and trans code 0700 but I had a real scan tool hooked up and I got the above codes. Anyone know what they can mean is wrong? I know the 0868 and 0867 are line pressure faults and 0740 is torque converter clutch open circuit. I'm just not sure where or how to rectify the issues. I'm still getting my aux fan coming on after about 20 mins of driving. Could the radiator be clogged and the trans fluid is not flowing through it properly? Like I said in my other post, I first noticed this issue when I had a Trans Temp light come on during a long trip a few weeks ago. Any input would be appreciated.