Injector High Side Short To GND Or VBATT - Bank 2
The fuel injector on Bank 2 has an electrical short circuit to ground or battery voltage, meaning it's not receiving the proper control signal. Think of it like a light switch that's stuck in the wrong position and won't respond to commands.
The ECU monitors the injector driver circuit voltage and current during fuel injection pulses. It expects a clean on/off switching pattern with specific voltage transitions. A short to ground or battery voltage causes abnormal voltage readings that trigger this fault when the circuit behaves unpredictably.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Injector driver voltage | Switches between 0V and 12V with proper timing | Stuck low (shorted to GND) or held high (shorted to VBATT) |
| Injector circuit current | Controlled rise/fall during pulse | Excessive or uncontrolled current draw |
Code P1297 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, P1297 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.