Trouble codes P0740 - 2006 Jeep Liberty

the codes are OBDll and are available on line free.
Example P0740 The diagnostic trouble code or DTC P0740 stands for "Torque Converter Clutch Solenoid Circuit/Open Circuit Malfunction.
P0753 The P0753 code indicates that the shift solenoid in transmission shift solenoid A, which changes the gears based off commands from the power train control module



all codes are transmission related.

codes are OBDll and are available on line free
example P0740 P0740 is a diagnostic trouble code (DTC) for Torque Converter Clutch Circuit Malfunction

https://www.yourmechanic.com/article/p0421-obd-ii-trouble-code-torque-converter-clutch-circuit-malfunction-by-andrew-quinn

https://www.repairsmith.com/estimates/trouble-codes/p0740/

P0740 OBD II Trouble Code

On some cars, there is a TCC solenoid in the transmission which can be replaced by removing the bottom pan. In some cars this solenoid can't be accessed without major disassembly.

This indicates a faulty Transmission Torque Converter Clutch (TCC) circuit (0740) or TCC solenoid (0743)

go to www.aa1car.com get the topic and fix it.
God bless you

Trouble Code: P1870

Transaxle Component Slipping (4T60-E)

Trouble Code Conditions: DTC P0502, P0503, P0740, P0753, P0758, P0785 and P1860 not set, engine started, vehicle driven to a speed of 30-82 at an engine speed of 1000-3000 rpm, Fuel Shutoff inactive, TP angle from 8-35%, commanded gear not in 1st gear and the gear range is D4, TF

that is your pressure control shift solenoid

P0740 - Torque Converter Clutch Malfunctionhttp://engine-codes.com/p0740.htmlForum CodePossible causes- Low transmission fluid level
- Dirty transmission fluid
- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness or connectors
- Torque converter clutch solenoid valve circuit is open or shorted When is the code detected?Diagnostic trouble code P0740 is detected when TCM detects an improper voltage drop when it tries to operate the solenoid valve.

P0700 TCM has requested PCM to run on Check engine light to alert to a fault in the automatic transmission.

Here is a diagnostic fault code table which may help you.