Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a part that helps the engine breathe better, and it's not working right. It's like when you have a stuffy nose and can't breathe well.
The P0664 code indicates that the intake manifold tuning valve control circuit on bank 2 is experiencing a low voltage condition.
The intake manifold tuning valve adjusts the airflow in the engine to optimize performance. Bank 2 refers to the side of the engine that does not contain cylinder 1. A 'circuit low' condition means the electrical signal is weaker than expected, which can affect engine efficiency and performance.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Faulty intake manifold tuning valve
• Wiring issues such as shorts or open circuits
• Faulty PCM (Powertrain Control Module)
Intake Manifold: A part of the engine that distributes air to the cylinders.
PCM: Powertrain Control Module, the computer that controls engine functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the intake manifold tuning valve for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the intake manifold tuning valve if faulty.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance checks
• Timely replacement of faulty components
• Keeping electrical connections clean and secure
Engine Performance
• Don't ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Consider regular maintenance to prevent future issues.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code has been associated with issues in vehicles with variable intake systems designed to improve performance and efficiency.
Moderate – While the vehicle may still be drivable, performance and fuel economy can be affected.
Driving with a malfunctioning engine component can lead to increased emissions and may not comply with local emissions regulations.
• Engine running
• Vehicle at operating temperature
The intake manifold tuning valve is typically located on the intake manifold of the engine, on the side corresponding to bank 2.
Q: Can I drive with a P0664 code?
A: You can drive with this code, but it's best to get it fixed soon to avoid performance issues.
Q: How can I prevent this code from appearing?
A: Regular maintenance and inspections can help prevent this issue.
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