P2650 OBD-II Trouble Code: “B” Rocker Arm Actuator Control Circuit Open Bank 1

P2650 trouble code definition

“B” Rocker Arm Actuator Control Circuit Open Bank 1

What the P2650 code means

P2650 is an OBD-II generic code for the engine control module (ECM) detecting the B rocker arm actuator control circuit for bank 1 has an open circuit. This could be anywhere in the actuator circuit.

What causes the P2650 code?

• The ECM detects an open circuit signal from the B rocker arm actuator and sets the code in memory. The Check Engine Light will then be turned on.

• The connection to the actuator or the actuator has an open circuit.

What are the symptoms of the P2650 code?

• The car may run erratic or power will be affected.

• The Check Engine Light will be illuminated.

How does a mechanic diagnose the P2650 code?

• Scans codes and documents the code in the ECM to view 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 B rocker arm actuator to verify if the failed actuator or wiring is open

Common mistakes when diagnosing the P2650 code

• Replacing the actuator without verifying the open circuit
• Failing to clear the ECM codes after the system is repaired
• Replacing parts when the connector is not making contact or broke

How serious is the P2650 code?

• Code P2650 is a code for the B rocker arm control circuit and will cause the engine to run erratic.

What repairs can fix the P2650 code?

• Replacing the B rocker arm actuator
• Repairing the wiring harness or connector to the actuator

Additional comments for consideration regarding the P2650 code

Code P2650 is not a very common code since most vehicles do not have actuators for the rocker arms of the engines they manufacture.

Need help with a P2650 code?

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