P0283
Cylinder 8 Injector A Circuit High
Fuel injector circuit
Generic OBD-II
High
What it means
P0283 means the ECM sensed a higher-than-normal voltage on cylinder 8's fuel-injector control circuit — usually an open circuit or a short to power on the injector wiring, a failed injector, or a driver fault. Cylinder 8 may not fire properly, so the engine can misfire and run rough.
High
Can I keep driving? Short trips only — a misfiring cylinder 8 can overheat the catalytic converter, so keep driving to a minimum until repaired.
Common symptoms
What you'll notice
- Check-engine light on
- Misfire or rough running, especially at idle
- Reduced power and hesitation
- Possible fuel smell or increased fuel use
Common causes
Most likely first
- Open or short-to-power in cylinder 8's injector wiringLikely
- Failed cylinder 8 fuel injectorCommon
- Corroded or loose injector connectorCommon
- Failed injector driver in the ECM (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame and inspect cylinder 8's injector connector and wiring for opens or shorts to power.
- Measure the injector's resistance and compare it to the other injectors and to spec.
- Swap the injector with a neighbouring cylinder to see if the code follows it.
- Replace the cylinder 8 injector if it has failed; repair the wiring otherwise.
- Clear the code and confirm the misfire is gone.
FAQ
Quick answers
Is it safe to drive with P0283?+
A dead injector misfires cylinder 8, which can overheat and damage the catalytic converter. Keep driving to a minimum until it's fixed.
Can I just clear P0283?+
It returns within a drive cycle while the injector or its circuit remains faulty.
Related codes
Often seen with P0283
Read & clear P0283 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