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Code P2659

Quick reference

P2659 at a glance

Plain-language meaning
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.
Urgency
Moderate – Should be addressed soon to prevent engine performance issues.
Difficulty
Moderate
System
Engine Performance
Tools mentioned
OBD-II scanner, Multimeter, Basic hand tools

This summary uses the existing diagnostic information shown in full below.

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.

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.

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.

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.

Optional diagnostic gear

Tools that may help diagnose P2659

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

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Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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