P0265
Cylinder 2 Injector A Circuit High
Fuel injector circuit
Generic OBD-II
High
What it means
P0265 means the ECM detected a higher-than-normal voltage on cylinder 2's fuel-injector control circuit — typically an open circuit or a short to power on the injector wiring, a failed injector, or a driver fault. Cylinder 2 may not fire correctly, so the engine can misfire and run rough.
High
Can I keep driving? Short trips only — a dead injector misfires cylinder 2 and can damage the catalytic converter, so minimise driving until fixed.
Common symptoms
What you'll notice
- Check-engine light on
- Misfire or rough running, especially at idle
- Reduced power and hesitation
- Possible increased fuel use or fuel smell
Common causes
Most likely first
- Open or short-to-power in cylinder 2's injector wiringLikely
- Failed cylinder 2 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 2'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 and see if the code follows it.
- Replace the cylinder 2 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 P0265?+
A single dead injector causes a misfire that can overheat and damage the catalytic converter. Drive as little as possible until it's fixed.
Can I just clear P0265?+
It comes back within a drive cycle while the injector or its circuit is faulty.
Related codes
Often seen with P0265
Read & clear P0265 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