Code PO743 Help Please

[Skater]

Bought a code reader and got a P0743 Torque Converter Clutch Circuit Electrical please tell me this isn't major, can someone tell me what this means????
Forgot to mention that I changed the 2 down stream 02 sensors about a week ago, does this play a part in it?????

 

[Skater]

Nobody?

 

[agireland]

I would think that as long as you dont feel the torque convertor constantly locking and unlocking, it is just an electrical problem not a mechanical problem. Could be anything like a loose wire or connector somewhere or a bad ground. But if the torque convertor keeps kicking in and out at highway speeds then you've got trouble. I've replaced the O2 sensors on mine and there are a lot of wires and connections running around back there. You might want to check and make sure you didnt accidently unplug anything. Look around the transmission and rear differential.

 

[BrooklynBay]

Check the links in # 98 in my list of useful threads for more information.

 

[Skater]

Tranny shifts fine no problems there, I hope, got back under the truck checked all connectors again and again, cleared the code drove it about 5 miles with no light, my wife will drive it tomorrow for the true test to see if it comes back on. Thanks guys I will keep you posted.

 

[Skater]

Ok I'm stumped , no codes but, I start the truck up seems normal shift it into reverse and it stalls , I thinking I haven't changed the fuel filter in a long time, could it be starving for fuel????? Don't think this would hurt.