Diagnosing P0660: Intake Manifold Tuning Valve Control Circuit Open Bank 1

This diagnostic trouble code (DTC) indicates that the intake manifold tuning valve control circuit is open on bank 1. The intake manifold tuning valve is responsible for controlling the air-fuel ratio in the engine by regulating the amount of air entering the combustion chamber. This code can be triggered if there is an issue with the wiring, connectors, or valve itself. It can also be triggered by other components such as a bad oxygen sensor or faulty fuel injectors. It is important to diagnose and repair this issue as soon as possible, as it can lead to poor engine performance and increased emissions.


Understanding Intake Manifold Tuning (IMT) Valve

An Intake Manifold Tuning (IMT) valve is a component of an internal combustion engine’s intake system that is used to control air flow and fuel mixture. It helps to optimize the engine’s performance by adjusting the amount of air and fuel that enters the cylinders. It works by opening or closing its valves as necessary, depending on the engine’s speed and load. This helps to maintain a proper fuel-air mixture and can help improve power output, fuel economy, emissions, and overall engine performance.

Signs and symptoms of a malfunctioning IMT valve may include poor engine performance, rough idle, stalling, hesitation when accelerating, misfiring, decreased fuel economy, increased exhaust emissions, and a check engine light. When diagnosing an open IMT valve control circuit, it is important to check for any damaged wiring or connectors in the circuit as well as checking for any loose or corroded terminals. Additionally, it is important to inspect the IMT valve itself for any visible damage or wear such as cracks or breaks in the housing or broken moving parts. If any of these issues are present then it may be necessary to replace the IMT valve or its components to restore normal operation.

Understanding Bank 1 in Automobiles

Bank 1 refers to one side of an automotive engine with two cylinder heads. It typically refers to either side of either a V-type 6-cylinder (V6), V-type 8-cylinder (V8), flat 4-cylinder (F4), flat 6-cylinder (F6), inline 4-cylinder (I4), inline 5-cylinder (I5) or inline 6-cylinder (I6). Bank 1 typically refers to the side where cylinder #1 is located though this can vary depending on how banks are arranged in different vehicles. Bank 1 can be identified by locating cylinder #1 and noting which side it is on; this will indicate which bank it belongs to. It is important to note that bank 1 does not necessarily refer only to the left side of an engine; rather it simply refers to whichever side contains cylinder #1 regardless of whether that is left or right side in a particular vehicle.

Automobiles: P0660 Intake Manifold Tuning Valve Control Circuit Open Bank 1

In an automobile’s engine, the intake manifold tuning (IMT) valve control circuit is responsible for controlling the air and fuel mixture in the combustion chamber. This helps to ensure optimal engine performance and fuel efficiency. When something goes wrong with this system, it can cause a variety of issues such as engine performance problems and exhaust smoke from one of the banks. In this article, we will be discussing what causes an open intake manifold tuning valve control circuit in bank 1 and how it can be repaired and maintained.

Common Issues with Bank 1 in Automobiles

One of the most common issues that arise with Bank 1 in automobiles is engine performance problems. These can range from a decrease in acceleration to decreased horsepower and torque. Another issue that can arise is exhaust smoke coming from just one bank of the engine, which is a sign that something isn’t right with the IMT valve control circuit.

Causes of Open Intake Manifold Tuning Valve Control Circuit in Bank 1

There are several potential causes for an open intake manifold tuning valve control circuit in bank 1. One of the most common causes is faulty wiring or connections in the circuit itself, which can lead to poor connection or even complete breakage of certain components within the system. Additionally, a damaged connector or harness to the IMT valve can lead to similar issues. Failing or inadequate ground connection can also cause a problem as it reduces power flow within the system, thus reducing its efficiency. Physical damage to the IMT valve itself may also occur if it has been subjected to excessive heat or strain over time. Furthermore, malfunctioning vacuum lines and hoses connected to the IMT valve may also cause an open intake manifold tuning valve control circuit in bank 1 due to improper airflow within the system.

Repair and Maintenance of Intake Manifold Tuning (IMT) Valves

If you find yourself dealing with an open intake manifold tuning valve control circuit in bank 1, then there are several steps you need to take for proper repair and maintenance of your IMT valves. First off, you should check all wiring and connections related to your IMT valves for any signs of damage or wear-and-tear that could potentially lead to issues such as an open circuit. If any part needs repair or replacement then make sure you do so immediately before any further damage occurs within your system. Additionally, inspect all vacuum lines connected to your IMT valves for any signs of wear-and-tear or damage as well as ensuring all connections are properly fitted so that there are no leaks present that could lead to improper airflow within your system. Finally, make sure all ground connections are secure and free from corrosion so that power flow remains consistent throughout your vehicle’s electrical systems

FAQ & Answers

Q: What is an Intake Manifold Tuning (IMT) Valve?
A: The Intake Manifold Tuning (IMT) valve is a component of the engine that controls the amount of air entering the intake manifold. It is an electronically controlled valve that works in conjunction with other engine components such as throttle body, fuel injectors, and spark plugs. The IMT valve helps to optimize engine performance by controlling the air-fuel ratio and increasing or decreasing engine torque and power depending on driving conditions.

Q: What is Bank 1?
A: Bank 1 is a term used to refer to one side of the engine in an inline or V-shaped configuration. In a V-shaped engine, Bank 1 typically refers to either the left or right side, while in an inline configuration it will refer to either the front or rear side of the engine.

Q: What are signs and symptoms of a malfunctioning IMT Valve?
A: Signs and symptoms of a malfunctioning IMT Valve include poor acceleration, reduced fuel efficiency, increased emissions, rough idle, stalling during acceleration or deceleration, and excessive exhaust smoke.

Q: What are common issues with Bank 1 in automobiles?
A: Common issues with Bank 1 in automobiles include engine performance problems such as reduced acceleration, poor fuel efficiency, increased emissions, rough idle and stalling during acceleration or deceleration. Additionally, exhaust smoke from Bank 1 may indicate a problem with this part of the engine.

Q: How can I repair and maintain Intake Manifold Tuning (IMT) valves?
A: Repair and maintenance of Intake Manifold Tuning (IMT) valves includes inspecting wiring connections in the circuit for faults or damage; checking connectors or harnesses for damage; ensuring adequate ground connection; replacing any defective parts; inspecting vacuum lines connected to the IMT valve for damage; and ensuring all seals are correctly fitted and tight.

In conclusion, the P0660 intake manifold tuning valve control circuit open Bank 1 is an issue that can be caused by several problems, such as a faulty valve, wiring or connector, or ECM. It is important to have the problem diagnosed and repaired as soon as possible in order to ensure the safety and proper operation of your vehicle.

Author Profile

Carl Frisch
Carl Frisch
With more than 30 years in the bicycle industry, I have a strong background in bicycle retailing, sales, marketing and customer service. I have a passion for cycling and a dedication to excellence. As a manager, I worked diligently to increase my capabilities and responsibilities, managing up to eleven mechanics (at Palo Alto Bicycles) and later as a working partner in my own store.

As the shop owner of Spoke n’ Word Cycles in Socorro, NM, the success of the mission was my responsibility, which I pursued passionately since we opened in 2003 through the spring of 2011. I am adept at managing owned and loan inventory, preparing weekly & annual inventory statements, and managing staff. The role as managing partner also allowed me tremendous freedom. I used this personal freedom to become more deeply involved in my own advancement as a mechanic, to spearhead local trail building, and advocating for cycling both locally and regionally.

As a mechanic, I have several years doing neutral support, experience as a team mechanic, and experience supporting local rides, races, club events. I consistently strive to ensure that bicycles function flawlessly by foreseeing issues and working with the riders, soigners, coaches and other mechanics. Even with decades of experience as a shop mechanic and team mechanic, and continue to pursue greater involvement in this sport as a US Pro Mechanic, and UCI Pro Mechanic.

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