P2720: Pressure Control Solenoid 'E' Control Circuit Low
The P2720 code indicates that the Powertrain Control Module (PCM) has detected a low voltage condition in the control circuit of the pressure control solenoid 'E'. This solenoid is part of the transmission's hydraulic system, regulating fluid pressure to control clutch and band application. A low circuit condition typically means the voltage or resistance is below the expected range, often due to wiring issues, a faulty solenoid, or a PCM problem. This can lead to improper transmission operation, harsh shifting, or slipping.
01. Most Common Causes
- Faulty pressure control solenoid 'E'
- Open or shorted wiring in the solenoid control circuit
- Poor electrical connection at the solenoid or PCM
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or erratic shifting
- Transmission slipping or delayed engagement
- Reduced fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data to confirm conditions.
Step 2: Visually inspect wiring and connectors for damage, corrosion, or loose pins.
Step 3: Test solenoid resistance with a multimeter; compare to manufacturer specs (typically 4-6 ohms).
Step 4: Check voltage at solenoid connector with ignition on; should be near battery voltage.
Step 5: If wiring and solenoid are good, test PCM output; if no signal, suspect PCM failure.
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 improperly, causing internal damage. Limp mode may activate, limiting speed and drivability.
How much does it cost to fix?▼
Repair costs vary: solenoid replacement $150-$300, wiring repair $100-$200, PCM replacement $500-$1000. Diagnostic fees are typically $100-$150.