The torque converter clutch allows the engine and transmission to fully or partially lock into a 1:1 direct drive to improve fuel efficiency and performance. If the ECU detects that the TCC pressure control solenoid is not functioning properly, it may not have the right amount of hydraulic pressure needed to engage or disengage the torque converter clutch. In this scenario, a P2756 DTC will be stored.
What Transmission Do I Have?
How Serious is the Code?
A P2756 diagnostic trouble code is very serious, because if the TCC clutch is unable to operate properly, a number of transmission problems can occur. Including harsh shifts, slipping, transmission overheating and engine stalling.
Symptoms
Symptoms of a P2756 include:
- Harsh, erratic shifts
- Slipping
- Engine stalls while stopped in gear
- Vehicle won’t move when in gear
- Increased fuel consumption
- Transmission overheats
- Limp mode
Causes
- Not enough ATF in the transmission
- Transmission fluid and filter are dirty
- The wiring and connectors may be damaged
- Transmission fluid leak
- Torque converter clutch pressure control solenoid has failed
- Torque converter has failed
- Fluid passages inside the transmission are blocked
- Valve body is not functioning properly
- TCM or ECU has failed
How to Diagnose the Code?
In order to diagnose a P2756 OBDII trouble code, advanced diagnostic equipment will be needed to test the function of the torque converter clutch.
What Transmission Do I Have?
What Repairs Will Fix P2756?
- Change the transmission fluid and filter
- Repair transmission fluid leaks
- Clean corrosion from connectors
- Repair or replace wiring
- Replace faulty torque converter clutch pressure control solenoid
- Repair or replace a faulty torque converter clutch
- Repair or replace defective torque converter
- Flash or replace ECU/TCM
Related Codes
- P2757 – Torque Converter Clutch Press Ctrl Solenoid Ctrl Circ Perf or Stuck Off
- P2758 – Torque Converter Clutch Press Ctrl Solenoid Ctrl Circ Stuck On
- P2759 – Torque Converter Clutch Press Ctrl Solenoid Ctrl Circ Electrical
- P2760 – Torque Converter Clutch Press Ctrl Solenoid Ctrl Circ Interm
- P2761 – Torque Converter Clutch Press Ctrl Solenoid Ctrl Circ/Open
- P2762 – Torque Converter Clutch Press Ctrl Solenoid Ctrl Circ Range/Perf
- P2763 – Torque Converter Clutch Press Ctrl Solenoid Ctrl Circ High
- P2764 – Torque Converter Clutch Press Ctrl Solenoid Ctrl Circ Low
