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 engine's cylinder 6, which helps save fuel by turning off when not needed.
The P3442 code indicates an issue with the deactivation of cylinder 6, which is part of the engine's system to improve fuel efficiency by disabling certain cylinders when full power is not needed.
The P3442 code is triggered when the Powertrain Control Module (PCM) detects a performance issue in the cylinder deactivation system for cylinder 6. This system uses solenoids and oil pressure to deactivate the intake valve, effectively turning off the cylinder to save fuel during light load conditions.
• Check Engine Light illuminated
• Reduced engine performance
• Increased fuel consumption
• Faulty cylinder deactivation solenoid
• Oil pressure issues
• Wiring or connector problems in the control circuit
PCM: Powertrain Control Module, the computer that manages engine and transmission functions.
Solenoid: A device that converts electrical energy into mechanical movement, used here to control valves.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the cylinder deactivation solenoid for proper operation.
• Replace the faulty cylinder deactivation solenoid.
• Repair or replace damaged wiring or connectors.
• Ensure proper oil pressure and quality.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $400
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regular oil changes with the correct grade
• Routine inspection of engine wiring
• Use quality fuel to prevent deposits
Engine Performance
• Avoid heavy loads until repaired.
• Monitor fuel consumption for any changes.
• Seek professional diagnosis if unsure.
Check with the vehicle manufacturer for warranty coverage on engine components.
Cylinder deactivation technology has been used in vehicles to improve fuel efficiency, but issues like P3442 have been reported due to solenoid or oil pressure failures.
Moderate – While the vehicle may still be drivable, it is recommended to address the issue to restore optimal performance and fuel efficiency.
Driving with a malfunctioning cylinder deactivation system may not comply with emissions regulations and can affect vehicle safety.
• Engine at operating temperature
• Vehicle at steady speed
The cylinder deactivation solenoid is typically located on the engine block near the affected cylinder.
Q: Can I drive with a P3442 code?
A: Yes, but it's best to have it checked soon to avoid further issues.
Q: What happens if I ignore this code?
A: Ignoring it can lead to decreased fuel efficiency and potential engine damage.
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