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Code P0660: Intake Manifold Tuning Valve Control Circuit/Open Bank 1

When your engine control module registers an electrical fault or other open electrical issue on bank one, it triggers error code P0660. You’re probably wondering, how do I fix trouble code P0660? Here are some symptoms of this trouble code, common causes and steps to take to restore your vehicle.

What Is an Intake Manifold Tuning Valve?

This manifold is used to change the air intake of your vehicle and redirect it to a separate set of intake runners. It also regulates the pressure between intake plenums. This simple valve is commonly made of plastic and is subject to wear and damage, particularly from extreme temperatures.

A P0660 trouble code can be the result of either an electrical or mechanical issue. Look for these symptoms and determine the cause before you look for a repair solution.

Symptoms of Error Code P0660

So, what does the code P0660 mean? While this error code could be the result of a damaged sensor, it could also be the first sign of a serious issue. It’s important to treat this error code seriously to avoid any additional damage in the future.

A damaged intake manifold tuning valve could cause your engine to perform poorly altogether. From cold start issues and startup misfires to decreased fuel economy and clicking sounds in your engine compartment, there are a range of symptoms that could be caused by trouble code P0660. Some are minor inconveniences, while others can reduce the efficiency of your vehicle or make it difficult to start your vehicle reliably.

When working properly, your intake manifold tuning valve promotes an optimal balance of air pressure and airflow in your engine. An improper valve could allow too much or too little air and pressure to reduce the efficiency of your engine or cause damage to other areas of your engine.

Common Causes of P0660

Once you’ve determined that your engine issues are the result of error code P0660, here are some common causes to inspect. Whether you have a single issue or a series of faults, look for solutions for one or more of these issues:

  • Damaged intake manifold tuning valve
  • Cracked or stuck valve parts
  • Poor performance due to extremely cold weather
  • Loose connectors, frayed wiring or corroded electrical components
  • Issues with your engine control module
  • Valve contamination

Thankfully, each of these causes can be found and solved. Find your intake manifold tuning valve and begin to inspect it and related components. Use voltage testers to go over the electrical connections and ensure proper electricity to all your sensors and essential parts. Once you’ve discovered the area that needs repairs, you can determine the best solution.

Finding a Solution

For a trouble code P0660 issue, you’ll typically need to replace your intake manifold tuning valve or other component. The most common solution is replacing a part that has cracked due to exposure to the extreme cold or melted due to the extreme heat of your engine.

If nothing is obviously broken after a visual inspection, check your valve. Some OBD-II scanners allow you to activate your valve. If so, look for any sticking points or areas where it isn’t operating with its full range of motion.
Temperature-related damage may be the cause of this OBD-II scanner error code P0660 problem, but it could be a symptom of other damage. Check to see if other error codes are active and inspect other areas of your engine for possible damage. After you replace your intake manifold tuning valve, parts or electrical wiring, be sure to test your vehicle and see whether the error code returns. If it does, you’ll need to go over common causes again or check your engine control module.

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