Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car's computer is having trouble controlling a part that helps the engine breathe better on one side of the engine.
The P0028 code indicates an issue with the intake valve control solenoid, which helps manage the flow of air into the engine for optimal performance.
The P0028 code is triggered when the Engine Control Module (ECM) detects a problem with the range or performance of the intake valve control solenoid circuit on bank 2. This solenoid is part of the Variable Valve Timing (VVT) system, which adjusts the timing of the intake valves to improve engine efficiency and performance.
• Check Engine Light illumination
• Reduced engine performance
• Poor fuel economy
• Faulty intake valve control solenoid
• Wiring issues in the solenoid circuit
• ECM malfunction
ECM: Engine Control Module, the computer that controls the engine.
VVT: Variable Valve Timing, a system that adjusts the timing of the engine valves.
• 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.
• 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 - $400
Moderate
• Nissan Altima
• Subaru Outback
• Hyundai Sonata
• Regular maintenance and oil changes
• Inspect and clean engine components periodically
• Use high-quality engine oil
Engine Performance
• Avoid aggressive driving until the issue is resolved.
• Schedule a diagnostic check with a professional mechanic.
Check your vehicle's warranty for coverage on engine components.
The P0028 code has been reported in vehicles with variable valve timing systems, especially those with higher mileage.
Moderate – It is recommended to address this issue soon to avoid potential engine performance problems.
Driving with a malfunctioning engine component can lead to increased emissions and potential safety issues.
• Engine at operating temperature
• Vehicle in idle and under load conditions
The intake valve control solenoid is typically located on the cylinder head of bank 2.
Q: Can I drive my car with a P0028 code?
A: While you can drive with this code, it is advisable to fix it soon to avoid engine performance issues.
Q: How does the intake valve control solenoid affect my car?
A: It helps optimize engine performance by adjusting the timing of the intake valves for better air intake.
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