Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is having trouble controlling the intake valve for the ninth cylinder, which helps save fuel by turning off that cylinder when it's not needed.
This code indicates a problem with the electrical circuit controlling the deactivation of the intake valve in cylinder 9. The circuit is reporting a higher than expected voltage.
P3468 is set when the Powertrain Control Module (PCM) detects a high voltage condition in the circuit responsible for controlling the deactivation of the intake valve on cylinder 9. This could be due to a short circuit, open circuit, or a malfunctioning solenoid.
• Check Engine Light illuminated
• Reduced engine performance
• Increased fuel consumption
• Faulty intake valve control solenoid
• Wiring issues such as short circuits or open circuits
• Faulty PCM
PCM: Powertrain Control Module, the computer that controls engine and transmission functions.
Solenoid: An electromechanical device used to control the flow of fluid or air.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• 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 PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regular maintenance and inspection of wiring harnesses.
• Ensure all connectors are clean and secure.
• Use high-quality engine oil to prevent solenoid sticking.
Engine Performance
• Avoid driving aggressively until the issue is resolved.
• Seek professional diagnostic to prevent further damage.
Check with the vehicle manufacturer for specific warranty coverage related to engine components.
This code is often associated with vehicles equipped with cylinder deactivation technology, which became more prevalent in the early 2000s.
Moderate – While the vehicle may still be drivable, ignoring this issue can lead to increased fuel consumption and potential engine damage.
Driving with a malfunctioning engine can lead to safety hazards and may not comply with emissions regulations.
• Engine at operating temperature
• Vehicle driven under normal conditions
The intake valve control solenoid is typically located on the engine near the cylinder head.
Q: Can I drive my car with a P3468 code?
A: It's possible, but not recommended as it can lead to increased fuel consumption and potential engine damage.
Q: How can I reset the P3468 code?
A: You can reset the code using an OBD-II scanner, but it's important to fix the underlying issue first to prevent the code from returning.
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