P02F4
Cylinder 7 Injector Circuit Range/Performance
The cylinder 7 injector drive circuit is electrically OK but the response (current ramp, dwell time, or peak voltage) does not match the calibrated profile — typically a high-resistance solenoid winding or wiring corrosion.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Solenoid winding ageingCommon
- Sensor element aged beyond calibration windowLess likely
- Sensor mounting loose - signal dampingLess likely
Parts involved
- Fuel Injector
P02F4 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.