Question about 2001 Honda Civic
Trany converter clutch system failure
Since this is also a trany problem, test this code by getting a complete wiring diagram of the trany electronic circuit. Once you have it and identified the location and colors of the torque converter solenoids/module, it is a matter of measuring the resistance of the TCC solenoid and comparing it to all solenoids. If defective, it is will either show open or shorted connection. Don't forget the basics like checking the wires for integrity of insulation and routing (making sure the wires are not rubbing a metal or being burnt by the exhaust). If there is a chance that the solenoid needs to be replaced, drop the trany oil pan so you can verify for signs of debris.
To manually test your TCC solenoid before replacing it, you can feed direct battery voltage on the supply side of the solenoid and you should hear it click. Also try to test the connections between the TCC module and the engine module.
Posted on Feb 11, 2010
Po740 I believe is a o2 sensor code but I am not for sure on that. You can go buy Auto Zone or Advanced Auto Parts and they will pull the code out of your computer for free.If you can't change the part yourself then just purchase it and have a trust worthy garage to install the part. The big mark up is when a garage gets the part you need because they usually mark that part up 20 to 40% to make money, sorry the truth is the truth. Hope this helped you out.
Posted on Feb 07, 2010
This code on a honda indicates a slipping transmission. No, it doesn't define the code as such. But every honda I've seen with this code has burn't fluid due to slipping. And there is no pan on this transmission to drop. Honda electronics are outside of the unit.
Alan, CAPS Transmission
Posted on Jun 28, 2013
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Posted on Jan 02, 2017
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