Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a special part that helps control how the engine's parts move. Right now, the computer is saying it can't control this part properly on one side of the engine.
The P2658 code indicates that the engine control module (ECM) has detected a low voltage condition in the rocker arm actuator control circuit for bank 2 of the engine.
The rocker arm actuator is part of the variable valve timing (VVT) system, which helps improve engine performance and efficiency. Bank 2 refers to the side of the engine that does not contain cylinder 1. The control circuit is responsible for sending signals to the actuator to adjust the timing of the rocker arms. A 'low' condition means the voltage is below the expected range, which can affect the actuator's operation.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Faulty rocker arm actuator
• Wiring issues or poor connections in the actuator circuit
• Faulty ECM (Engine Control Module)
ECM: Engine Control Module, the computer that controls engine functions.
VVT: Variable Valve Timing, a system that optimizes engine performance.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections for damage or corrosion.
• Test the rocker arm actuator for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the faulty rocker arm actuator.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $600
Moderate
• Honda Accord
• Acura TL
• Toyota Camry
• Regular maintenance and inspection of the engine components.
• Ensure all electrical connections are clean and secure.
• Use quality engine oil to prevent sludge build-up.
Engine Performance
• Avoid driving the vehicle hard until the issue is resolved.
• Consult with a professional mechanic for a thorough inspection.
Check with your vehicle manufacturer; powertrain warranties may cover this repair.
This code is commonly associated with issues in vehicles with advanced VVT systems, especially in older models where wiring may degrade over time.
Moderate – While the vehicle may still be drivable, performance and fuel efficiency could be compromised.
Ignoring this code could lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle in idle or under light load
The rocker arm actuator is typically located on the cylinder head of the engine, on the side referred to as bank 2.
Q: Can I drive with a P2658 code?
A: It's possible to drive, but it's not recommended as it may affect performance and fuel efficiency.
Q: How can I prevent a P2658 code?
A: Regular maintenance and using quality engine oil can help prevent this issue.
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