P2720 Fault Code

Pressure Control Solenoid D Control Circuit Low

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2720 fault code indicates that there is an issue with the Pressure Control Solenoid D Control Circuit being detected at a low voltage level. This means that the Transmission Control Module (TCM) is not receiving the expected voltage signal from the solenoid when it is commanded to operate.

• The pressure control solenoid is critical for regulating the hydraulic pressure within the transmission and ensuring smooth gear shifts.
• Low voltage can result from wiring issues, solenoid malfunction, or a fault in the TCM itself.

What are the symptoms of the P2720 code?

• Erratic or harsh shifting of the transmission.
• Transmission may enter failsafe mode, limiting engine performance.
• Check engine light illuminated on the dashboard.
• Potential transmission fluid leaks if the solenoid fails completely.

What causes the P2720 code?

• Damaged or frayed wiring connected to the Pressure Control Solenoid D.
• Corrosion or poor connections at the electrical connectors.
• A malfunctioning Pressure Control Solenoid D that fails to operate as intended.
• Internal transmission issues or faults with the TCM that affect solenoid performance.

How to fix P2720?

• Inspect the wiring and connectors related to the Pressure Control Solenoid D for any signs of damage or corrosion.
• Test the Pressure Control Solenoid D for proper operation using a multimeter or diagnostic tool.
• Replace any damaged wiring or connectors found during inspection.
• If the solenoid is faulty, replace it with a new one and clear any stored fault codes.
• Consider resetting the TCM or performing a relearn procedure if necessary.