P0265: Cylinder 2 Injector Circuit High
Can you still drive? Not recommended. Excess fuel delivery can damage the catalytic converter and dilute engine oil, leading to accelerated wear.
What Does P0265 Mean?
Code P0265 means the ECM has detected excessive voltage in the cylinder 2 fuel injector circuit. A high circuit condition often indicates a wiring short to power or an internally failed injector coil. This can cause the injector to stay open or deliver too much fuel.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Short to power in injector wiring
- Internally shorted fuel injector
- Damaged wiring harness near engine
- ECM driver circuit failure
Symptoms
- Check engine light on
- Rough idle
- Black smoke from exhaust
- Fuel smell from engine bay
- Engine misfire
Diagnostic Steps
- 1Inspect cylinder 2 injector wiring for visible damage
- 2Measure circuit voltage at injector connector
- 3Test injector coil resistance
- 4Disconnect injector and monitor circuit voltage
- 5Check for wiring harness contact with hot components
Recommended Parts & Tools
fuel injector
wiring harness repair kit
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $100 - $600 |
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Frequently Asked Questions
What happens when an injector circuit is shorted high?
The injector may stay open or pulse longer than intended, flooding the cylinder with excess fuel. This leads to rich running, black smoke, and potential catalytic converter damage.
Can I replace just one fuel injector?
Yes, you can replace a single injector, though some mechanics recommend replacing all injectors at the same time for balanced fuel delivery.
Community Fix Reports
Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.
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