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 the intake valve for cylinder 4. It's like when you try to turn off a light, but the switch doesn't work right.
The P3426 code indicates a problem with the deactivation or control of the intake valve for cylinder 4, which is part of the engine's cylinder deactivation system.
The P3426 code is triggered when the Engine Control Module (ECM) detects a performance issue in the intake valve control circuit for cylinder 4. This can occur when the voltage or resistance in the circuit is outside the expected range, affecting the cylinder deactivation system's ability to function properly.
• Check Engine Light is on
• Poor engine performance
• Reduced fuel efficiency
• Faulty intake valve control solenoid
• Wiring issues in the intake valve control circuit
• Malfunctioning ECM
ECM: Engine Control Module
Solenoid: A device that converts electrical energy into mechanical movement
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors for the intake valve control solenoid
• Test the intake valve control solenoid for proper operation
• Replace the 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 maintenance of the engine
• Timely replacement of faulty components
• Routine inspection of wiring and connectors
Engine Performance
• Avoid driving at high speeds until repaired
• Get the vehicle checked by a professional mechanic
• Monitor fuel consumption for any unusual changes
Check with your vehicle manufacturer for warranty coverage on engine components.
The P3426 code has been commonly reported in vehicles with cylinder deactivation systems, particularly in V8 engines.
Moderate – Address the issue soon to prevent further engine performance problems.
Driving with an active Check Engine Light may lead to further damage and is not recommended.
• Engine at operating temperature
• Vehicle in idle or low-load conditions
The intake valve control solenoid for cylinder 4 is typically located on the engine near the intake manifold.
Q: Can I drive my car with a P3426 code?
A: It's not recommended to drive for long periods with this code, as it can lead to reduced engine performance and efficiency.
Q: How can I prevent a P3426 code?
A: Regular maintenance and timely repairs of engine components can help prevent this code.
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