P2649 CHEVROLET code

P2649 is an OBD-II code for the engine control module (ECM) detecting the ‘A’ rocker arm actuator control circuit for bank 1 has voltage is high. This indicates a short to power in the actuator circuit.

Where is the rocker arm actuator located?

Zitat von Youtube: Number three electrical issues since the rocker arm actuator is located at the top end of the engine. It is exposed to high engine temperature inspect the connection at the rocker. Arm.

What is P2649?

OBD-II Code P2649 is defined as a “A” Rocker Arm Actuator Control Circuit High. The Rocker Arm Control Solenoid supplies hydraulic pressure to the Variable Timing mechanism. This allows the Variable Timing System to adjust valve timing as needed.

What is a rocker arm actuator system stuck on bank 1?

The ECM detects a problem in the rocker arm system for bank 1. The oil passages are clogged or the oil pressure is not up to specifications. The rocker arm actuator is clogged with sludge or is sticking intermittently. The engine may have excessive sludge binding the rockers from moving or the oil is too thick.

What is rocker arm actuator?

The rocker arm actuator is an oil pressure switch which controls the flow of oil to critical upper engine cylinder head components.

How do I fix error code P2649?

What repairs can fix the P2649 code?

  1. Replacing the ‘A’ rocker arm actuator.
  2. Repairing the wiring harness or connector to the actuator.
  3. Following the manufacture pinpoint test to isolate faults in the system.

How much does it cost to fix a rocker arm actuator?

Because rocker arm repair is tedious work, it can be time intensive so hiring an auto mechanic or dealership to do the job is not cheap. Expect to pay anywhere from $500 to $1,500 (parts + labor) depending on the vehicle. A good chunk of the expense is for labor as it can take a long time to access the necessary parts.

How do I fix error code P2647?

What repairs can fix the P2647 code?

  1. Adding or changing the engine oil.
  2. Replacing the timing belt or chain as well as other timing components.
  3. Replacing the oil control valve or other variable valve timing components.
  4. Repairing or replacing wiring or connectors that are associated with the variable valve timing system.

What causes rocker arm failure?

One of the major causes of component failure is faulty manufacturing. This includes all effects that increase brittleness or those inducing cracks and or stress raisers in the component. Improper heat treatment has been considered as major causes of many failures in the literature.

How do I fix error code P2646?

There is no single method to fix the P2646 code since there are a few potential causes that can trigger it. Following are the possible solutions to mitigate this error: Repair and replace the wiring apparatus or connector to the actuator.