Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the system that turns off one of the engine's cylinders to save fuel. It's like if one of the lights in your house won't turn off when you flip the switch.
The code P3474 indicates an issue with the deactivation of the intake valve control circuit for cylinder 10. This could affect the engine's ability to deactivate the cylinder properly, impacting fuel efficiency and performance.
The P3474 code is triggered when the Engine Control Module (ECM) detects a performance issue in the intake valve control circuit for cylinder 10. This system is part of the cylinder deactivation technology, which helps improve fuel economy by shutting down certain cylinders under light load conditions. A malfunction in this system could lead to improper engine performance.
• Check Engine Light is on
• Reduced engine performance
• Decreased fuel efficiency
• Faulty intake valve control solenoid
• Wiring issues in the intake valve control circuit
• Faulty Engine Control Module (ECM)
ECM: Engine Control Module, the computer that manages engine functions.
Solenoid: An electromechanical device used to control a valve.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for cylinder 10's intake valve control circuit.
• Test the intake valve control solenoid for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the intake valve control solenoid if faulty.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regular maintenance of the engine and its components.
• Timely inspection of wiring and connectors.
• Use quality fuel and oil to prevent deposits.
Engine Performance
• Avoid heavy acceleration until the issue is resolved.
• Get the vehicle checked by a professional mechanic.
• Monitor fuel consumption for any unusual changes.
Check with the vehicle manufacturer for warranty coverage on engine components.
Cylinder deactivation technology has been used to improve fuel efficiency, but issues with control circuits can lead to performance problems.
Moderate – While the vehicle may still be drivable, it is important to address the issue to avoid long-term engine damage and maintain fuel efficiency.
Driving with an active Check Engine Light can lead to further damage and may not comply with emission regulations.
• Engine at operating temperature
• Vehicle idling or under light load
The intake valve control solenoid for cylinder 10 is typically located near the top of the engine, close to the cylinder head.
Q: Can I drive my car with a P3474 code?
A: While you can drive with this code, it's best to get it fixed soon to avoid potential engine damage and poor fuel economy.
Q: How does cylinder deactivation work?
A: Cylinder deactivation turns off some of the engine's cylinders under light load conditions to save fuel.
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