P0265
Fix within a few daysCylinder 2 Fuel Injector Circuit High
Code P0265 means Cylinder 2 Injector Circuit High. Common causes: Faulty fuel injector (70%), wiring issues (20%), connector problems (5%). Drivability: Limit driving, fix within a few days. Repair cost: $30-$100 DIY, $150-$400 professional.
Can I Drive With P0265?
Limit driving, fix within a few days
Essential trips under 10 miles, avoid highways and heavy acceleration. Immediate repair needed to prevent further damage.
Stop driving immediately if: Flashing Check Engine Light, loud banging noises from the engine, strong smell of raw fuel, significant power loss, or engine stalling.
Symptoms of P0265
- 1Check Engine Light is on
- 2Engine misfire or rough idle
- 3Reduced engine power
- 4Poor fuel economy
- 5Engine may run on fewer cylinders
- 6Engine may stall
Common Causes of P0265
Parts most likely causing this code, ranked by probability
The fuel injector for cylinder 2 has an internal electrical fault, such as an open circuit or high resistance, causing the PCM to detect a high voltage.
70% of P0265 cases are fixed by replacing this part
Damaged, corroded, or open wiring in the circuit leading to the cylinder 2 fuel injector prevents proper electrical flow.
20% of P0265 cases are fixed by repairing the wiring
A loose, corroded, or damaged electrical connector at the cylinder 2 fuel injector creates a poor connection or an open circuit.
5% of P0265 cases are fixed by repairing or replacing the connector
A faulty driver circuit within the engine computer responsible for controlling the cylinder 2 fuel injector can cause this code.
5% of P0265 cases are fixed by replacing the ECM/PCM
Check These First (Before Buying Parts)
- Visually inspect the wiring harness and electrical connector for the cylinder 2 fuel injector for any signs of damage, fraying, or corrosion.
- Ensure the fuel injector connector is securely seated on the injector.
How to Diagnose P0265
- 1Visually inspect the wiring harness and connector for cylinder 2 fuel injector for damage or corrosion.
- 2Use a multimeter to check the resistance of the cylinder 2 fuel injector; compare it to specifications and other injectors.
- 3Use a noid light to check for a pulse signal at the cylinder 2 fuel injector connector while the engine is cranking.
- 4If the injector resistance is out of specification, replace the cylinder 2 fuel injector.
- 5If no pulse is present but the injector resistance is good, check for continuity and shorts in the wiring from the injector connector back to the ECM/PCM.
- 6If wiring is confirmed good, test the ECM/PCM for proper injector driver output.
P0265 on Popular Vehicles
Ford F-150
2004-2024Ford F-150s, particularly with 5.4L and 5.0L V8 engines, frequently experience P0265 due to failed fuel injectors or wiring harness issues near the injector.
75% fixed by replacing the fuel injector
Honda Accord
2003-2024On Honda Accords, P0265 is often traced to a failed fuel injector. Inspecting the injector connector for corrosion or damage is also a critical first step.
70% fixed by replacing the fuel injector
Toyota Camry
2007-2024Toyota Camry models can experience P0265 from a faulty fuel injector. While less common, check for rodent damage to the injector wiring harness.
65% fixed by replacing the fuel injector
Frequently Asked Questions
What does P0265 mean?
P0265 indicates that the engine computer (PCM) has detected a higher than normal voltage or an open circuit in the electrical control circuit for the fuel injector on cylinder 2.
Can I drive with P0265?
Limit driving, fix within a few days. Driving with a P0265 code means cylinder 2 is not firing correctly, sending unburned fuel into your exhaust. This will damage your catalytic converter quickly.
Will P0265 clear itself?
No, P0265 will not clear itself. This code indicates a hard electrical fault that requires diagnosis and repair. The Check Engine Light will remain on until the underlying issue is resolved.
How do I fix P0265 myself?
Start by visually inspecting the wiring and connector for cylinder 2's fuel injector. Use a multimeter to test the injector's resistance. If it's out of spec, replace the cylinder 2 fuel injector. If the injector tests good, check the wiring for continuity back to the engine computer.
How much does it cost to fix P0265?
A DIY repair for P0265 typically costs $30-$100 for a new fuel injector. Professional repair at a shop ranges from $150-$400, covering the part and 1-2 hours of labor.
P0265 keeps coming back - why?
If P0265 keeps returning, it indicates the initial repair did not address the root cause. This often points to a persistent wiring issue that was overlooked, a faulty connector, or, less commonly, a failing engine computer (PCM) that was misdiagnosed.
Will P0265 fail emissions/smog test?
Yes, P0265 will cause your vehicle to fail an emissions or smog test. The Check Engine Light will be on, and the misfire will result in high pollutant levels.
What's the difference between P0265 and P0302?
P0265 specifically indicates an electrical circuit problem with the cylinder 2 fuel injector. P0302 indicates a general misfire on cylinder 2, which could be caused by the injector, spark plug, ignition coil, or even mechanical engine issues. P0265 is a more specific electrical fault that will cause a P0302.
P0265 on Ford F-150?
On Ford F-150s, especially those with V8 engines, P0265 is commonly caused by a faulty fuel injector for cylinder 2. Wiring issues, particularly around the injector harness, are also a known cause due to heat and vibration over time.
Questions to Ask Your Mechanic
Did you check the resistance of the cylinder 2 fuel injector and compare it to the other injectors?
Good answer: Yes, I measured the resistance at X ohms, and the specification is Y ohms. It's out of range, indicating a bad injector.
What did you find when you tested the injector pulse signal at the cylinder 2 connector?
Good answer: I used a noid light and confirmed there is no pulse, or the pulse is weak, indicating a wiring or PCM issue after confirming the injector is good.
Repair Cost Estimate
DIY Repair
Parts only
$30-$100
Shop Repair
Parts + labor
$150-$400
Save $120-$300 by doing it yourself
Difficulty
intermediate
Time
1-2 hours
Intermediate. This repair requires basic electrical testing skills with a multimeter and careful work around the fuel system. Access to the injector can vary by vehicle.
Cost of Waiting
Continued driving with P0265 will send unburned fuel into your exhaust system. This rapidly overheats and destroys your catalytic converter, turning a $30-$100 injector fix into a $800-$2,500 catalytic converter replacement.
While You're In There...
These seals prevent fuel leaks and ensure proper injector seating. They are always replaced when a fuel injector is removed or installed.
If the injector has been faulty for a while, the spark plug in cylinder 2 may be fouled with fuel, causing a continued misfire even after injector replacement.
Tools You'll Need
- OBD-II scanner
- Multimeter
- Fuel injector socket/wrench
- Noid light (optional, but highly recommended)
- Fuel line disconnect tool (if applicable)
- Basic hand tools (ratchets, extensions, screwdrivers)
P0265 is a common electrical fault for a fuel injector. Diagnosing it systematically is straightforward, and replacing a single injector is a manageable repair that restores engine performance and prevents more expensive damage.
- Family-owned since 1957
- 990,000+ happy customers
- Fast nationwide shipping
- Easy returns
Your Next Steps
Step 1: Visually inspect the wiring and connector for the cylinder 2 fuel injector. Look for any cuts, chafing, or corrosion. Ensure the connector is fully seated.
Step 2: Use a multimeter to test the resistance of the cylinder 2 fuel injector. Compare the reading to your vehicle's specifications and to other injectors. If it's outside the specified range, replace the injector.
Step 3: If the injector resistance is good, use a noid light to check for an injector pulse at the cylinder 2 connector while cranking the engine. If there's no pulse, you'll need to trace the wiring back to the ECM/PCM for continuity and shorts. If wiring is good, the ECM/PCM may be at fault.