P2652 Fault Code

B Rocker Arm Actuator System Stuck On Bank 1

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

The P2652 fault code indicates that the rocker arm actuator system on Bank 1 is stuck in the 'on' position. This can lead to improper engine performance as the variable valve timing (VVT) system is unable to adjust the rocker arms as needed. When this code is triggered, it can affect the engine's efficiency and emissions output.

What are the symptoms of the P2652 code?

Symptoms of a P2652 code may consist of:

• Engine misfires
• Decreased fuel efficiency
• Rough idling or engine stalling
• Illuminated check engine light (CEL)
• Noticeable changes in engine performance, particularly at higher RPMs

What causes the P2652 code?

Common causes of the P2652 error include:

• Faulty rocker arm actuator
• Electrical issues, such as damaged wiring or poor connections
• Oil flow issues, including low oil levels or dirty oil
• Engine deposits that restrict actuator movement
• Faulty engine control module (ECM) or software issues

How to fix P2652?

To resolve the P2652 fault code, follow these steps:

1. Inspect the rocker arm actuator and connections for damage or blockages.
2. Check the engine oil level and condition; replace any dirty oil.
3. Ensure proper electrical connections and inspect wiring for any shorts or breaks.
4. If no mechanical issues are found, consider reprogramming or replacing the ECM.
5. Clear the error code and perform a test drive to ensure proper function.