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P2649 is a diagnostic trouble code (DTC) for "‘A’ Rocker Arm Actuator Control Circuit High Bank 1". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
‘A’ Rocker Arm Actuator Control Circuit High Bank 1
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.
The ECM detects a short circuit signal from the 'A' rocker arm actuator and sets the code in memory. The engine light will then be turned on.
The connection to the actuator or the actuator has an short circuit.
The engine may run erratic or power will be affected.
The engine may lose power.
The engine may not run smooth when the two banks of the engine are in different valve positions.
The Check Engine Light will be illuminated.
Scans for codes and documents the code in the ECM, and then views the freeze frame data for the code.
Checks the wiring and connector to the actuator to make sure it is okay.
Performs the manufacture pinpoint test on the ‘A’ rocker arm actuator to verify if the failed actuator or wiring is shorted to power.
Replacing the actuator without verifying the actuator is shorted or the circuit is shorted
Failing to clear the ECM codes after the system is repaired
Replacing parts when the wiring is shorted to power on the return circuit to ECM
Code P2649 is a code for the 'A' rocker arm control circuit, and will cause the engine to run erratic and have power loss issues.
Code P2649 is not a very common code since most vehicles do not have actuators for the rocker arms of the engines they manufacture. The actuators are the most common failure that causes the short in the circuit causing the code.
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