P02F0
Cylinder 3 Injector Circuit Range/Performance
Fuel injector circuit
Generic OBD-II
High
What it means
P02F0 means the electrical signal to (or from) the cylinder 3 fuel injector is out of the expected range — the injector isn't responding the way the computer commands. That usually shows up as a miss or rough running on cylinder 3, most often from a wiring or connector fault rather than the injector itself.
High
Can I keep driving? You can usually drive, but cylinder 3 may misfire and run rough — fix it promptly to protect the catalytic converter.
Common symptoms
What you'll notice
- Check-engine light on
- Rough idle or a steady miss from cylinder 3
- Hesitation or reduced power under load
- Slightly increased fuel consumption
Common causes
Most likely first
- Corroded, loose, or damaged connector at the cylinder 3 injectorLikely
- Open or shorted wiring between the injector and its driver circuitCommon
- Faulty cylinder 3 fuel injector (out-of-spec resistance or response)Common
- Injector driver fault inside the control module / ECM (less common)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the cylinder 3 injector connector and pins for corrosion or looseness.
- Measure the injector's resistance and compare it to the other cylinders.
- Check the wiring from the injector back to its driver for opens and shorts.
- Swap or replace the injector if it is out of spec, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P02F0?+
Short trips are usually fine, but a misfiring cylinder can overheat the catalytic converter over time, so repair it soon.
Can I just clear P02F0?+
It will return once the electrical or injector fault is present again. Fix the circuit or injector first.
Related codes
Often seen with P02F0
Read & clear P02F0 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX