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 has found a problem with the system that turns off one of the engine's cylinders (number 5) to save fuel. It's like one of your fingers isn't working right when you try to make a fist.
The P3433 code is triggered when the engine control module (ECM) detects an issue with the circuit responsible for deactivating cylinder 5's intake valve.
The P3433 code indicates a malfunction in the cylinder deactivation system, specifically for cylinder 5. This system is designed to improve fuel efficiency by deactivating certain cylinders under light load conditions. The ECM monitors the intake valve control circuit for cylinder 5, and if it detects an open circuit or a fault, it sets the P3433 code.
• Check Engine Light is on
• Reduced engine performance
• Increased fuel consumption
• Faulty intake valve control solenoid
• Open or shorted wiring in the intake valve control circuit
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• 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 and electrical systems.
• Promptly addressing Check Engine Light alerts.
• Using quality fuel and oil.
Engine Performance
• Do not ignore the Check Engine Light.
• Consult a professional mechanic if unsure about repairs.
Check if your vehicle's powertrain warranty covers repairs related to this code.
Cylinder deactivation systems have been used in vehicles to improve fuel efficiency, and issues with these systems have been documented since their introduction.
Moderate – It is advisable to address this issue soon to avoid reduced performance and increased fuel consumption.
Driving with a malfunctioning engine system can lead to further damage and is not recommended.
• Engine at operating temperature
• Light load conditions
The intake valve control solenoid is typically located near the cylinder head on the engine.
Q: Can I drive with a P3433 code?
A: While you may be able to drive, it's not recommended as it can lead to poor performance and increased fuel consumption.
Q: How does cylinder deactivation work?
A: Cylinder deactivation turns off some of the engine's cylinders when full power is not needed, improving fuel efficiency.
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