Cold Start Injector 2 Malfunction
The engine's cold-start fuel injector (injector 2) isn't working properly, making it hard to start in cold weather. Think of it like a spray bottle that's supposed to mist extra fuel when it's freezing outside, but the nozzle is clogged or broken.
The ECM monitors the cold-start injector's activation signal and fuel delivery during cold-start mode (below ~50°F coolant temp). It expects proper voltage and current draw when the injector is commanded on. A fault occurs when the ECM detects no response, high resistance, or open/short circuit in the injector circuit.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Injector activation voltage | 12V pulse during cold crank | 0V or no signal detected |
| Circuit resistance | 2-14 ohms | Open circuit (infinite) or short to ground |
Code P0215 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, P0215 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.