A pressure control solenoid is used by the computer to direct pressurized hydraulic fluid to a particular clutch pack or transmission band the purpose in changing gears. If the computer detects that the pressure control solenoid labeled E is stuck in the Off position, a P2723 DTC will be set.
How Serious is the Code?
The P2723 diagnostic trouble code is a very serious code. If it gets set, the computer will command maximum line pressure which will put extra wear on internal components. There will also be a number of drivability issues, including shift problems, limp mode and engine stalling.
Symptoms of a P2723 include:
- Harsh, erratic shifts
- Engine stalls while stopped in gear
- Transmission won’t shift out of a gear
- Transmission can’t engage a gear
- Increased fuel consumption
- Transmission overheats
- Limp mode
- Insufficient transmission fluid
- Dirty transmission fluid / filter
- Frayed wiring / damaged connectors
- Failing pressure control solenoid
- Failing transmission pump
- Internal pressure problems
- Valve body issue
- ECU or TCM failure
How to Diagnose the Code?
When diagnosing a P2723 diagnostic trouble code, the first thing a mechanic should look at is the level and condition of the transmission fluid. If it’s dirty or there are metal shavings, the transmission could have serious internal damage. Sometimes it’s possible to flush the transmission and clear blocked hydraulic passages. However, this may only be a temporary fix if damage has already been done to the valve body, clutches or seals.
If the transmission fluid is clean and there are no visible leaks, the wiring harness and connectors should be carefully inspected for damage and corrosion. If nothing is found, then the pressure control solenoid should be tested directly following the manufacturers recommended test procedure. If the solenoid functions properly, then other components like the ECU/TCM programming, valve body or transmission pump could be at fault.
What Repairs Will Fix P2723?
- Changing the fluid and filter
- Replace faulty pressure control solenoid
- Repair or replace a faulty transmission pump
- Repair defective transmission valve body
- Install a remanufactured valve body
- Transmission flush to clean passages
- Cleaning corrosion from connectors
- Repairing or replacing wiring
- Flashing or replacing ECU/TCM
- P2722 – Pressure Control Solenoid E
- P2724 – Pressure Control Solenoid E Stuck On
- P2725 – Pressure Control Solenoid E Electrical
- P2726 – Pressure Control Solenoid E Intermittent
- P2727 – Pressure Control Solenoid E Ctrl Circ / Open
- P2728 – Pressure Control Solenoid E Ctrl Circ Range/Perf
- P2729 – Pressure Control Solenoid E Ctrl Circ Low
- P2730 – Pressure Control Solenoid E Ctrl Circ High