The P0665: Intake Manifold Tuning Valve Control Circuit High Bank 2 code refers to a high voltage condition in the control circuit for the intake manifold tuning valve on Bank 2. This may be caused by a wiring issue, a faulty valve, or a malfunction in the control circuit itself. If left unresolved, it can affect the engine’s air intake and performance.
P0665 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0665: Intake Manifold Tuning Valve Control Circuit High Bank 2 |
| Is it serious? | Yes, as it can cause engine performance issues and improper airflow management. |
| Possible causes | – High voltage in the control circuit for the intake manifold tuning valve (Bank 2) – Faulty valve – Wiring issue |
| How to diagnose? | – Test intake manifold tuning valve control circuit for Bank 2 for voltage – Inspect wiring and connectors – Replace valve if necessary |
P0665 Meaning
The P0665 code indicates that the control module has detected a higher-than-expected voltage in the intake manifold tuning valve control circuit for Bank 2. The intake manifold tuning valve regulates airflow for optimal engine performance. When the voltage in the control circuit is too high, the valve may not function correctly, affecting fuel efficiency and throttle response.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for any additional codes related to airflow control or engine performance, which may help in diagnosing the issue. | OBD-II Scanner |
| Test the Intake Manifold Tuning Valve Control Circuit for Bank 2 | Use a multimeter to measure the voltage in the control circuit for the intake manifold tuning valve on Bank 2. Compare the readings to manufacturer specifications. | Multimeter |
| Inspect Wiring and Connectors | Inspect the wiring and connectors leading to the intake manifold tuning valve for Bank 2 for signs of damage, loose connections, or corrosion that could result in high voltage. | Flashlight, Multimeter |
| Test the Tuning Valve Actuator | Test the actuator for the tuning valve to ensure it is receiving the correct voltage and functioning as expected. Replace if necessary. | Diagnostic Tool, Multimeter |
| Replace the Tuning Valve if Necessary | If the intake manifold tuning valve on Bank 2 is found to be faulty, replace it to restore normal airflow and engine performance. | Replacement Valve, Tools |
| Clear the Code and Test | After repairs, clear the code using an OBD-II scanner and test the vehicle to ensure the intake manifold tuning valve control circuit is operating correctly. | OBD-II Scanner, Vehicle Manual |
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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)