P2663 Fault Code

B Rocker Arm Actuator Control Circuit Low Bank 2

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

The P2663 fault code indicates an issue with the rocker arm actuator control circuit for Bank 2 of the engine. This circuit is responsible for controlling the variable valve timing (VVT) system, which optimizes engine performance and efficiency by adjusting the timing of the intake and exhaust valves. A low voltage or open circuit in this actuator can lead to poor engine performance and increased emissions.

What are the symptoms of the P2663 code?

Signs that may accompany the P2663 code include:

• Check Engine Light illumination
• Engine misfires or rough idling
• Decreased engine power or acceleration
• Poor fuel economy
• Unusual noises from the engine, especially during acceleration.

What causes the P2663 code?

Common causes of the P2663 code include:

• Faulty rocker arm actuator
• Open or shorted wiring in the actuator circuit
• Corroded connectors or contact points
• Faulty engine control module (ECM)
• Low engine oil level or dirty oil affecting actuator performance.

How to fix P2663?

To resolve the P2663 code, follow these steps:

1. Inspect the wiring and connectors for the rocker arm actuator circuit for any visible damage or corrosion.
2. Test the voltage and resistance of the circuit using a multimeter to identify issues.
3. Replace the rocker arm actuator if it is found to be faulty.
4. Clear the fault code and take the vehicle for a test drive to ensure the issue is resolved.
5. If the code returns, further diagnose the ECM or related components.