P0664 OBD-II Trouble code: Intake Manifold Tuning Valve Control Circuit Low Bank 2

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Cost of diagnosing the P0664 code

P0664 is a diagnostic trouble code (DTC) for "Intake Manifold Tuning Valve Control Circuit Low Bank 2". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
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Check Engine Light

P0664 code definition

The P0664 trouble code detects an electrical error with the intake manifold tuning valve control circuit in bank 2.

What the P0664 code means

The P0664 code is a generic OBD-II trouble code that notes an issue with the intake manifold tuning valve control circuit in engine bank 2, which is the engine bank that does not house the number 1 cylinder. This control circuit is monitored by the powertrain control module (PCM), and many other control modules, such as the cruise control module, traction control module, and transmission control module. When one of these control modules notes a circuit error from the intake manifold tuning valve, then the P0664 trouble code may be triggered.

What causes the P0664 code?

Causes for the P0664 trouble code include:

  • Faulty PCM driver
  • Broken control module ground wire
  • Loose control module ground strap
  • Defective fuel injector control module
  • In rare cases, a faulty PCM or CAN bus
  • Defective electrical components in the PCM or the controller area network (CAN) bus

What are the symptoms of the P0664 code?

The P0664 trouble code will usually be joined by the Check Engine Light, which will illuminate on the instrument panel. The vehicle may experience performance issues as well, such as delayed acceleration, rough idling, and frequent stalling. Fuel efficiency will likely be diminished as well.

How does a mechanic diagnose the P0664 code?

The P0664 code will be diagnosed using a standard OBD-II trouble code scanner. A certified mechanic will use the scanner to view the freeze frame data, and gain information about the P0664 code. The scanner will also be used to check for the presence of additional trouble codes, which will need to be addressed in the order in which they appear. The trouble codes will then need to be reset, and the vehicle restarted, so the mechanic can see if the code remains detected. If not, then an intermittent error should be suspected, or possibly an erroneous trigger.

If the P0664 code remains detected, then the mechanic will begin by visually inspecting all of the electrical components in the system. Loose or corroded connectors, open or shorted wires, and blown fuses will all need to be replaced. The ground wire and ground strap should then be tested as well.

If the issue is unresolved, then the mechanic will then need to use a specialized CAN scanner to gather further information about the various control modules, and pinpoint where the error is coming from.

After any replacements are made, the mechanic will need to halt the inspection, clear the trouble codes, and restart the vehicle, to see if the code remains detected. This will allow the mechanic to know as soon as the error has been fixed.

Common mistakes when diagnosing the P0664 code

The most commonly made error when diagnosing the P0664 code comes from a failure to properly abide by the OBD-II diagnosis protocol. It is very important that mechanics comply with the protocol, as it helps ensure an efficient diagnosis that is devoid of erroneous repairs.

The P0664 code is often accompanied by other trouble codes, which may be a reaction to the communication errors created by the P0664 code. It is common for these reactionary codes to be unnecessarily inspected before the P0664 code is, which can lead to the erroneous replacements.

How serious is the P0664 code?

A vehicle with the P0664 code will be drivable, though it may experience severe enough drivability issues that it is not practical to use. As soon as the code is detected, an inspection should be scheduled.

What repairs can fix the P0664 code?

Repairs for the P0664 trouble code are:

Additional comments for consideration regarding the P0664 code

It is rare for the P0664 trouble code to signal a defective CAN bus or PCM, so these causes should only be considered after all other potential causes have been inspected. If either of these components needs to be replaced, then the they will also need to be reprogrammed.

Need help with a P0664 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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