P2664 Fault Code

B Rocker Arm Actuator Control Circuit High Bank 2

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

The P2664 fault code indicates an issue with the rocker arm actuator control circuit for Bank 2. This code is typically associated with the variable valve timing (VVT) system, which helps optimize engine performance and efficiency. When this circuit is identified as being high, it suggests that the voltage in the actuator circuit exceeds the expected range, potentially leading to incorrect valve operation.

What are the symptoms of the P2664 code?

Symptoms of a P2664 code can vary, but typically include:

• Illuminated check engine light (CEL)
• Poor engine performance, particularly at higher RPMs
• Increased exhaust emissions
• Rough idling or unusual engine noises.

What causes the P2664 code?

Common causes for the P2664 code include:

• Faulty rocker arm actuator
• Wiring issues such as short circuits or open circuits in the actuator's control circuit
• Corroded connectors or poor electrical connections
• Failing engine control module (ECM)
• Oil flow issues in the VVT system due to low engine oil levels or contamination.

How to fix P2664?

To resolve the P2664 fault code, consider the following steps:

• Inspect the wiring and connectors for the rocker arm actuator for any visible damage or corrosion and repair as necessary.
• Test the rocker arm actuator to ensure it is functioning correctly and replace it if found faulty.
• Check engine oil levels and quality to ensure the VVT system operates optimally.
• Use an automotive scan tool to clear the fault codes and test drive the vehicle to see if the code reappears. If the code returns, further diagnostics may be required.