Intake Manifold Runner Control (Bank 2) Stuck Open
The intake manifold runner control valve on the right side of the engine is physically stuck in the open position, like a door that won't close. The engine computer detected that the valve isn't responding to commands to restrict airflow as intended.
The ECM monitors the position feedback from the intake manifold runner control valve solenoid on Bank 2 via a position sensor. It commands the valve open and closed to optimize airflow at different engine speeds. When the valve fails to respond or return to the commanded position within a set timeframe, the fault is triggered.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Valve Response Time | 50-200 milliseconds | No movement or >500ms response |
| Position Sensor Voltage | 0.5-4.5V (varying with position) | Stuck at single voltage, no change on command |
Code P1565 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.
Once the fault is repaired, P1565 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.