P0262: Cylinder 1 Injector Circuit High
Can you still drive? Not recommended. A shorted injector circuit can flood the cylinder with fuel, washing oil from the cylinder walls and potentially causing engine damage.
What Does P0262 Mean?
Code P0262 means the ECM has detected a higher-than-expected voltage in the cylinder 1 fuel injector circuit. This is often caused by a short to power in the wiring, an internally shorted injector, or a problem with the ECM's injector driver. The cylinder may run excessively rich.
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 battery voltage in injector wiring
- Internally shorted fuel injector
- Damaged wiring harness
- Faulty ECM injector driver
Symptoms
- Check engine light on
- Rough idle
- Black smoke from exhaust
- Strong fuel smell
- Misfire on cylinder 1
Diagnostic Steps
- 1Inspect cylinder 1 injector wiring for chafing or shorts
- 2Measure injector circuit voltage with key on, engine off
- 3Test injector resistance and compare to specifications
- 4Disconnect injector and check if voltage reading normalizes
- 5Check ECM connector pins for damage
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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Chat with AI About P0262Commonly Affected Vehicles
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Frequently Asked Questions
What causes a high injector circuit?
Typically a short to power in the wiring harness or an internally failed injector that has lower resistance than normal.
Can a shorted injector damage the engine?
Yes, excess fuel can wash lubricating oil from the cylinder walls, accelerating wear and potentially causing catalytic converter damage.
Community Fix Reports
Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.
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