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 the car's computer is having trouble controlling one of the engine's parts that helps save fuel when you don't need a lot of power.
The P3418 code is triggered when the engine control module (ECM) detects a problem with the cylinder 3 deactivation or intake valve control circuit.
The P3418 code indicates a performance issue in the deactivation or intake valve control circuit for cylinder 3. This is part of the cylinder deactivation system, which helps improve fuel efficiency by disabling some cylinders when full engine power is not needed. The ECM monitors the performance of this system and sets the P3418 code when it detects a deviation from the expected performance.
• Check Engine Light illuminated
• Reduced engine performance
• Poor fuel economy
• Faulty intake valve control solenoid
• Wiring issues in the intake valve control circuit
• Faulty ECM
ECM: Engine Control Module, the computer that controls engine functions.
Solenoid: An electromechanical device that controls the flow of fluids or gases.
• Scan for codes and review freeze frame data
• Inspect the wiring and connectors for cylinder 3 intake valve control
• Test the intake valve control solenoid for proper operation
• Replace faulty intake valve control solenoid
• Repair or replace damaged wiring or connectors
• Reprogram or replace the ECM if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regular engine maintenance
• Ensure proper oil levels and quality
• Address engine warning lights promptly
Engine Performance
• Do not ignore the Check Engine Light
• Have the vehicle inspected by a professional
• Consider regular maintenance checks
Repairs may be covered under powertrain warranty if applicable.
Cylinder deactivation codes have become more common with the advent of fuel-saving technologies in modern engines.
Moderate – It should be addressed soon to avoid further engine performance issues.
Driving with a malfunctioning engine system can lead to increased emissions and potential safety risks.
• Engine running
• Vehicle at operating temperature
The intake valve control solenoid for cylinder 3 is typically located on the engine, near the cylinder head.
Q: Can I drive my car with a P3418 code?
A: It's not recommended to drive for extended periods with this code, as it can lead to reduced performance and efficiency.
Q: How can I prevent a P3418 code?
A: Regular maintenance and ensuring the engine is in good condition can help prevent this code.
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