P2718 - Pressure Control Solenoid 'D' Control Circuit/Open
The P2718 code indicates that the Powertrain Control Module (PCM) has detected an open or malfunction in the electrical circuit for the pressure control solenoid 'D'. This solenoid regulates hydraulic pressure within the automatic transmission to control shift timing and firmness. An open circuit means the solenoid is not receiving the proper voltage or ground, often due to damaged wiring, a faulty solenoid, or a poor connection. This can lead to erratic shifting, transmission slippage, or limp mode.
01. Most Common Causes
- Faulty pressure control solenoid 'D'
- Open or shorted wiring in the solenoid circuit
- Corroded or damaged connector at the transmission
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or delayed shifting
- Transmission slipping or stuck in gear
- Reduced fuel economy
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for additional transmission codes.
Step 2: Visually inspect the transmission wiring harness and connectors for damage, corrosion, or loose pins.
Step 3: Test the resistance of the pressure control solenoid 'D' with a multimeter (typically 5-20 ohms).
Step 4: Check for voltage and ground at the solenoid connector with the ignition on.
Step 5: If wiring and solenoid are good, test the PCM output or replace the PCM as a last resort.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the transmission may shift erratically or fail, potentially causing a safety hazard. Limp mode may limit speed to prevent damage.
How much does it cost to fix?▼
Repair costs vary: replacing the solenoid can cost $150-$300, while wiring repairs may be $100-$200. PCM replacement is more expensive, up to $1000.