P2655 Fault Code

A Rocker Arm Actuator Control Circuit/Open Bank 2

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

The P2655 fault code refers to an issue with the Rocker Arm Actuator Control Circuit or an open circuit for Bank 2 in the vehicle's engine system. This code indicates that the Engine Control Module (ECM) has detected a malfunction in the actuator circuit, which controls the variable valve timing for improved engine performance and efficiency. Without a properly functioning actuator, the engine may experience performance issues.

What are the symptoms of the P2655 code?

Symptoms associated with the P2655 code may include:

• Illumination of the check engine light
• Poor engine performance such as reduced power or acceleration
• Rough idling or engine misfires
• Decreased fuel efficiency
• An unusual noise from the engine related to the variable valve timing.

What causes the P2655 code?

The primary causes of the P2655 code can include:

• A faulty rocker arm actuator
• Damaged wiring or connectors in the actuator circuit
• A malfunctioning Engine Control Module (ECM)
• Low oil pressure which affects actuator performance
• Issues with the oil control solenoid that affects the rocker arm actuator operation.

How to fix P2655?

To resolve the P2655 fault code, consider the following steps:

• Inspect the wiring and connectors for damage or corrosion and repair or replace as necessary.
• Test the rocker arm actuator for proper operation and replace if faulty.
• Ensure the oil level is adequate and check for oil viscosity issues.
• Examine the oil control solenoid function and replace if defective.
• Clear the fault codes after repairs and conduct a road test to confirm that the issue is resolved.