P0743

Torque Converter Clutch Circuit Electrical

DTC P0743, sometimes indicated as P074300 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the causing torque converter clutch circuit electrical.

The Torque Converter Clutch (TCC) is an electro-mechanical device that engages and disengages the torque converter clutch to control the amount of power flowing from the engine to the transmission. The TCC is controlled by the Powertrain Control Module (PCM) by means of a duty cycle signal.
Possible causes of a P0743 code include:
- Defective torque converter clutch solenoid
- Defective torque converter clutch
- Defective PCM
- Wiring problem
- Faulty ground
Possible solutions include:
- Test the torque converter clutch solenoid
- Test the torque converter clutch
- Test the PCM
- Check the wiring
- Check the ground

  • P0743: Torque Converter Clutch Circuit Electrical
  • P0743: Torque Converter Circuit Electrical
  • P0743: Torque converter clutch (TCC) solenoid – electrical
  • P0743 00: Torque converter clutch (TCC) solenoid - electrical
  • P0743 00: Torque converter lockup failure

DTC Trouble Code Search
Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

Consumer Complaints for this DTC


2008 FORD ESCAPE with 46300.0 miles

We've owned an '08 Escape 2wd xls. At 46300 miles, she experienced a loss of acceleration between 10-20mph; at 22mph the car into gear; at 50mph she got the wrench light. Took it to the dealer, they hooked it up on the ids computer, came back with codes P0732 and P0743 internal transmission problem. They said it would need to be torn down to find cause of problem. When i asked how much for that i didn't get an answer and he went to say how if they did that the transmission would already be out and open so fixing it at that point would be the best. After i asked the second time how much is when he said approx. $2500 plus tax... Could be higher or lower for the tear down and repair. I declined and decided to take it to aamco. They confirmed the problem. They told me that the cost to rebuild the transmission would be almost as much as getting a remanufactured trans with all the problem areas upgraded and a 3yr 50,000 mile warranty, whereas a rebuild would only get 1 yr warranty. We ended up buying the remanufactured that was the better choice. At the end with labor, install and tax $2837.51. I emailed Ford prior to bring to aamco and didn't hear from then until 2 days before my wife's car was done. They call to ask if there was any way they could help but when i told them the Escape was no longer at the dealership they said there was nothing they could do. I told them we could not afFord to wait to hear from them and that it was a transmission specialist we took it to. They said that they cannot stand by the work an outside (non-Ford) shop does. I then told them how i knew Ford was aware of the problem because they had issued a service bulletin to its techs advising them of the problems because there are more than 1 problem with these transmissions. Ford knowingly put my wife and daughters lives in danger with this problem and they don't care. *js
POWER TRAIN,

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