P0665 Intake Manifold Tuning Valve Control Circuit High Bank 2

Definition: The OBD-II code P0665 indicates that the Engine Control Module (ECM) has detected a high voltage condition in the intake manifold tuning valve control circuit for bank 2. This typically means there is an issue with the electrical circuit or components related to the intake manifold tuning valve on bank 2 of the engine.

p0665 – Intake Manifold Tuning Valve Control Circuit High Bank 2

Typical Severity: Moderate

Common Causes

P0665 – Intake Manifold Tuning Valve Control Circuit High Bank 2

Common causes of this OBD2 code include:

• Faulty intake manifold tuning valve
• Open or short circuit in the wiring harness connected to the intake manifold tuning valve
• Corrosion or poor connections in the electrical connectors related to the intake manifold tuning valve
• Issues with the powertrain control module (PCM) that controls the intake manifold tuning valve circuit

 

Common Misdiagnosis

OBD2 Code: P0665

Description: Intake Manifold Tuning Valve Control Circuit High Bank 2

Common Misdiagnosis: Replacing the intake manifold tuning valve without checking for wiring issues or a faulty PCM (Powertrain Control Module).

 

Common Diagnostic Steps

OBD2 Code: P0665

Description: Intake Manifold Tuning Valve Control Circuit High Bank 2

• Inspect the intake manifold tuning valve for any visible damage or disconnection.
• Check the wiring and connectors leading to the intake manifold tuning valve for signs of wear, corrosion, or damage.
• Use a multimeter to test the voltage and ground signals at the intake manifold tuning valve connector.
• Verify that there is proper vacuum supply to the intake manifold tuning valve if applicable.
• Test the operation of the intake manifold tuning valve using a scan tool to command it on and off while monitoring its response.
• Inspect related fuses and relays for continuity and proper function.
• If equipped, check for any software updates or technical service bulletins (TSBs) related to this code from the vehicle manufacturer.
• If all tests pass but the code persists, consider replacing the intake manifold tuning valve.