P2661 Fault Code

B Rocker Arm Actuator System Performance/Stuck Off Bank 2

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

The P2661 code indicates an issue with the rocker arm actuator system for Bank 2. This system is crucial for controlling the variable valve timing, allowing for optimal engine performance and efficiency. When the actuator is stuck off, it leads to performance problems and may trigger engine warning lights.

What are the symptoms of the P2661 code?

• Decreased engine power
• Poor acceleration response
• Rough idling or stalling
• Increased fuel consumption
• Activation of the check engine light
• Unusual engine noises during operation

What causes the P2661 code?

• Faulty rocker arm actuator
• Wiring issues or short circuits in the actuator circuit
• Poor connection or corrosion affecting actuator performance
• Engine control module (ECM) malfunction
• Mechanical obstruction within the engine components affecting the rocker arm operation

How to fix P2661?

• Inspect the rocker arm actuator for signs of damage or wear
• Check wiring and connectors for continuity and damage
• Clean any corrosion or replace faulty connections
• Replace the rocker arm actuator if defective
• Reprogram or replace the ECM if it is determined to be malfunctioning
• Clear any stored trouble codes and run engine diagnostics to ensure proper operation