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.

Real-world scan data

Seen in

308

scans in the past year

Found in

0.1%

of scans

0.1%

of scans that found faults

Appears alongside · share of P02F0 scans

P02EEin 94.5% of scans

P00BCin 92.5% of scans

P00BDin 92.5% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

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.

Read & clear P02F0 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX