P2649 Fault Code

A Rocker Arm Actuator Control Circuit High Bank 1

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

The P2649 code indicates an issue with the rocker arm actuator control circuit on Bank 1. This system is part of the variable valve timing (VVT) mechanism, which helps regulate the timing of engine valves for improved performance and efficiency. When the actuator circuit is detected to be 'high', it means that there's an electrical issue that needs to be addressed.

What are the symptoms of the P2649 code?

• Check Engine Light (CEL) activated
• Poor engine performance or hesitation
• Reduced fuel efficiency
• Potential engine misfires
• Unusual engine noise especially at idle or low RPM
• Rough idling or stalling

What causes the P2649 code?

• Faulty rocker arm actuator
• Disconnect or frayed wiring in the actuator circuit
• Short circuit in the circuit
• Malfunctioning engine control module (ECM)
• Poor connection or corrosion at the actuator or ECM connectors

How to fix P2649?

• Inspect and repair any damaged wiring or connectors associated with the rocker arm actuator.
• Replace the rocker arm actuator if it is found to be faulty.
• Clear the Check Engine Light and perform a test drive to ensure the issue is resolved.
• If problems persist, check the ECM for any fault codes or malfunctions.