P0758 p0753 p0743 p0768 p0763 - 2002 Mitsubishi Lancer

chech all wiring to gearbox

basically all of the codes refer to the solenoid
check all wiring and connections for corrosion, check the condition of the oil as it may be well overdue for a change
remember that solenoids get the power from the transmission control module(TCM), the Transmission ratio(TR) sensor m) and the VSS ( vehicle speed sensor )
all of these play a part in making the solenoid work at h right time
I would suggest that you spend time discussing the problem and the codes with a professional transmission repair shop just to expand on the manuals limited information

OBD II Trouble Codes Home

P0743 torque convirtor circuit malfunction
P0753 3-4 shift solonoid

I suggest you take that up with the person that installed the transmission. They should be able to reset codes that were triggered when installing trans

This is a wiring problem you have a loose connector at the ECT control module or connector at the transmission,the solution is make proper connection and this is a common problem,that or you have a bad conductor plate in the transmission. Go to the right rear of the engine compartment ensure you connection for the transmission module is all hook up, go to the transmission and ensure nothing at the harness is disconnected

here is a Diagnostic Trouble Code Table, hope it can help you

P0753 Shift Solenoid A Electrical its inside of transmission not very easy to replace it controls the shifting of the transmission
P0763 Shift Solenoid C Electrical its another transmission shift solenoid
P0758 Shift Solenoid B Electrical another shift solenoid now my question to you is your transmission shifting normal have you had any work done to your car recently like changeing any seals on your transmission to have theses replaced by a mechanic its gonna be very expensive i could tell you step by step how to change them with theses codes you should be haveing serious shifting issues if you dont have shifting issues reset codes and see if they come back if they do then it could be in the wireing harness comeing from transmission hope this answers your question happy holidays

What was the codes exactly that Auto Zone gave you.??? it might just be a simple wire harness that may have gone loose since you did some work on the speed sensor.
Here are the trouble codes for your car.  Good Luck and get the car scanned again for a more define information.

P0751 Shift Solenoid A Performance or Stuck Off

P0752 Shift Solenoid A Stuck On

P0753 Shift Solenoid A Electrical

P0754 Shift Solenoid A Intermittent

P0755 Shift Solenoid B Malfunction

P0756 Shift Solenoid B Performance or Stuck Off

P0757 Shift Solenoid B Stuck On

P0758 Shift Solenoid B Electrical

P0759 Shift Solenoid B Intermittent

P0760 Shift Solenoid C Malfunction

P0761 Shift Solenoid C Performance or Stuck Off

P0762 Shift Solenoid C Stuck On

P0763 Shift Solenoid C Electrical

P0764 Shift Solenoid C Intermittent

P0765 Shift Solenoid D Malfunction

P0766 Shift Solenoid D Performance or Stuck Off

P0767 Shift Solenoid D Stuck On

P0768 Shift Solenoid D Electrical

P0769 Shift Solenoid D Intermittent

P0770 Shift Solenoid E Malfunction

P0771 Shift Solenoid E Performance or Stuck Off

P0772 Shift Solenoid E Stuck On

P0773 Shift Solenoid E Electrical

P0774 Shift Solenoid E Intermittent

P0780 Shift Malfunction

hi it sounds like a solinoid shift problem you need to check them out individually to see which one is the culprit as it is unlikley it will be more than one if they are all ok then you have a wiring problem that will need to be traced back till you find the break yates210456