P0265

Cylinder 2 Injector A Circuit High

Q: 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.

Q: Can I just clear P0265?

It comes back within a drive cycle while the injector or its circuit is faulty.

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.

Real-world scan data

Seen in

131

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Appears alongside · share of P0265 scans

P0262in 60.3% of scans

P0340in 47.3% of scans

P0335in 46.6% 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
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.

Read & clear P0265 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