P0289 Code: Cylinder 10 Fuel Injector Circuit High
🟠 Moderate severity · drivable
Drivable, but cylinder 10 may misfire and the engine can run rough. Have it checked soon.
What P0289 means
The fuel injector circuit for cylinder 10 is reading higher voltage than the computer expects. That usually means the circuit is shorted or the injector is failing, so the computer cannot control fuel delivery to that cylinder correctly.
Symptoms
- Check engine light on
- Rough idle or misfire
- Loss of power
- Poor fuel economy
Common causes
- most common: Shorted or damaged wiring in the cylinder 10 injector circuit
- common: Faulty fuel injector on cylinder 10
- common: Loose or corroded injector connector
- rare: Injector driver fault inside the engine computer
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Inspect and clean the cylinder 10 injector connector | Yes | $0–10 |
| Repair shorted or damaged injector wiring | Mechanic | $50–200 |
| Replace the cylinder 10 fuel injector | Mechanic | $100–300 |
Frequently asked questions
Can I drive with P0289?
Yes, but cylinder 10 may misfire and the engine can run rough. Fix it soon to avoid damaging the catalytic converter.
What causes a P0289 code?
Usually a short or wiring problem in the cylinder 10 injector circuit, or a faulty injector.
How much does it cost to fix P0289?
Typically $100–$300 for a new injector, or less if it is just a wiring or connector repair.
Related codes
P0288
P0288 Code: Cylinder 10 Fuel Injector Circuit Low
P0290P0290 Code: Cylinder 10 Fuel Injector Contribution/Balance
P0310P0310 Code: Cylinder 10 Misfire Detected
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.