Cylinder 2 Injector Circuit Low
The fuel injector for cylinder 2 isn't receiving enough electrical power to spray fuel properly, like a garden hose with low water pressure. This causes incomplete fuel delivery and engine performance issues.
The ECM monitors the voltage and current supplied to the cylinder 2 fuel injector during the injection pulse. It detects abnormally low circuit voltage or insufficient current flow, indicating a wiring or connector problem. When voltage drops below normal operating range, the ECU logs a fault.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Injector circuit voltage | 12-14V during operation | Below 10V or insufficient current draw |
| Injector resistance | 12-16 ohms typical | Open circuit or shorted condition detected |
Code P0265 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, P0265 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.