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Code P2659

Symptoms

• Check Engine Light is on

• Decreased engine performance

• Rough idling or stalling

Common Causes

• Faulty rocker arm actuator

• Wiring issues such as shorts or open circuits

• Faulty PCM (Powertrain Control Module)

Glossary

Rocker Arm Actuator: A device that helps control the movement of the engine's valves.

Variable Valve Timing (VVT): A technology that adjusts the timing of the engine's valves for improved performance.

Related Codes

• P2658

• P2646

Official description

A Rocker Arm Actuator Control Circuit High Bank 2

Laymans terms

Your car's computer is having trouble controlling a part that helps move the engine's parts smoothly. It's like a remote control not working properly for a toy car.

Explanation

The P2659 code indicates a problem with the electrical circuit controlling the rocker arm actuator on the second bank of the engine. The circuit is reading a higher voltage than expected.

Technical description

The rocker arm actuator is part of the Variable Valve Timing (VVT) system, which adjusts the timing of the engine's valves for better performance and efficiency. The 'Control Circuit High' means that the voltage in the actuator's control circuit is higher than the expected range, which can cause issues with the VVT system's operation.

Diagnosis steps

• Use an OBD-II scanner to confirm the code

• Inspect the wiring and connectors for damage

• Test the rocker arm actuator for proper function

Repair procedures

• Repair or replace damaged wiring or connectors

• Replace the rocker arm actuator if faulty

• Reprogram or replace the PCM if necessary

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$200 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Honda Accord

• Acura TL

• Honda Odyssey

Preventive measures

• Regular maintenance and inspections

• Ensure proper oil levels and quality

• Check electrical connections periodically

Error code type

Engine Performance

User experience recommendations

• Avoid driving the vehicle until repaired to prevent further damage

• Consult with a professional mechanic for accurate diagnosis

Warranty information

Check vehicle warranty for coverage on engine components.

Historical data

This code has been commonly reported in vehicles with VVT systems, especially in models with higher mileage.

Urgency level

Moderate – Should be addressed soon to prevent engine performance issues.

Legal and safety notice

Driving with this code may lead to decreased engine performance and increased emissions.

Testing conditions

• Engine at operating temperature

• Vehicle in park or neutral

Component location

The rocker arm actuator is typically located on the cylinder head, near the camshaft.

FAQs

Q: Can I drive with a P2659 code?
A: It's not recommended as it can affect engine performance and lead to further damage.

Q: What happens if I ignore the P2659 code?
A: Ignoring the code can result in reduced engine performance and potential damage to the engine.

Last updated: Mar 2, 2026 • Source: internal database
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