Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that a part in the engine that helps control the opening and closing of the valves isn't working properly on one side of the engine.
The P2661 code is triggered when the Powertrain Control Module (PCM) detects that the rocker arm actuator for bank 2 is not performing as expected or is stuck in the 'off' position.
The rocker arm actuator is a component that controls the movement of the rocker arms, which in turn open and close the engine's valves. Bank 2 refers to the side of the engine that does not contain cylinder 1. When the actuator system does not perform correctly or becomes stuck, it can affect engine performance and efficiency.
• Check Engine Light illuminated
• Reduced engine performance
• Increased fuel consumption
• Engine misfires
• Faulty rocker arm actuator
• Wiring issues or poor electrical connections
• Low engine oil pressure or dirty oil
• PCM issues
PCM: Powertrain Control Module
Actuator: A device that causes a machine or other device to operate
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the rocker arm actuator.
• Check the oil level and condition.
• Test the rocker arm actuator for proper operation.
• Replace the rocker arm actuator if faulty.
• Repair or replace damaged wiring or connectors.
• Change the engine oil and filter.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $600
Moderate
• Honda Accord
• Acura TL
• Toyota Camry
• Regular oil changes
• Routine engine maintenance
• Promptly address engine warning lights
Engine Performance
• Do not ignore the Check Engine Light.
• Regularly check and maintain engine oil levels.
• Seek professional help if unsure about repairs.
Check with the vehicle manufacturer for warranty coverage on engine components.
This code has been associated with vehicles using variable valve timing systems and has been reported more frequently in models with higher mileage.
Moderate – While the vehicle may still be drivable, it is important to address the issue to prevent further engine damage.
Driving with a malfunctioning engine component can lead to increased emissions and potential safety hazards.
• Engine at operating temperature
• Vehicle running at idle
The rocker arm actuator is typically located on the cylinder head of the engine, on bank 2.
Q: Can I drive with a P2661 code?
A: It's not recommended to drive for long periods with this code active as it can lead to engine damage.
Q: How can I prevent a P2661 code?
A: Regular maintenance, including timely oil changes and checking engine components, can help prevent this code.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.