A pressure control solenoid is a little electromechanical device that controls the amount of the hydraulic pressure inside of the valve body. The electrical/wiring issue that causes the circuit it operates on to remain Open, a P2718 DTC will be stored.
How Serious is the Code?
A P2718 diagnostic trouble code is fairly serious, because if the pressure control solenoid is not functioning properly, a number of drivability problems can occur. Including slipping, harsh shifts and engine stalling.
Symptoms of a P2718 include:
- Delayed or harsh shifts
- Erratic transmission behavior
- Transmission slipping
- Engine stalls when coming to a stop
- Transmission gets stuck in a gear
- Vehicle won’t move when in gear
- Lower MPG
- Transmission overheats
- Limp mode
- Dirty transmission fluid / filter
- Not enough transmission fluid
- Damaged wiring/connector
- Malfunctioning pressure control solenoid
- Defective transmission pump
- Blocked pressure passage
- Valve body issue
- TCM or ECU failure
How to Diagnose the Code?
One of the first things that should be considered when diagnosing a P2718 DTC, is the level and condition of the transmission fluid. Dirty transmission fluid can cause all sorts of problems, including pressure control solenoid issues. Next, the technician should thoroughly examine all of the wiring and connectors on the transmission wiring harness. If no problems are found, then the pressure control solenoid itself will have to be tested.
What Repairs Will Fix P2718?
- Changing the fluid and filter
- Replace faulty pressure control solenoid
- Repair or replace a faulty transmission pump
- Repair or replace defective transmission valve body
- Transmission flush to clean passages
- Cleaning corrosion from connectors
- Repairing or replacing wiring
- Flashing or replacing PCM
- P2717 – Pressure Control Solenoid D Intermittent
- P2719 – Pressure Control Solenoid D Ctrl Circ Range/Perf
- P2720 – Pressure Control Solenoid D Ctrl Circ Low
- P2721 – Pressure Control Solenoid D Ctrl Circ High