P1263 Ford Code - Cylinder #3 High To Low Side Short
Quick Answer
The P1263 Ford diagnostic trouble code (DTC) indicates that there is a high to low side short in Cylinder #3. Common causes include Wiring harness damage or short circuit, Faulty fuel injector in Cylinder #3, Corrosion or poor connection in injector circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1263 Ford indicates Cylinder #3 High To Low Side Short.
- Common causes
- Common causes include Wiring harness damage or short circuit, Faulty fuel injector in Cylinder #3, Corrosion or poor connection in injector circuit.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1263 Ford Description
The P1263 Ford diagnostic trouble code (DTC) indicates that there is a high to low side short in Cylinder #3. This means that there is an electrical issue in the fuel injector circuit for the third cylinder, causing a short circuit between the high and low sides of the injector. In a typical fuel injection system, the injector is supplied with a voltage from the engine control module (ECM) on the high side and the low side is grounded to complete the circuit. However, in this case, there is an unintended connection between the high and low sides, leading to an abnormal flow of current.
Common Causes of P1263 Ford
- Wiring harness damage or short circuit
- Faulty fuel injector in Cylinder #3
- Corrosion or poor connection in injector circuit
- ECM malfunction or software issue
- Electrical system fault
Symptoms of P1263 Ford
- Check Engine Light illuminated
- Misfiring in Cylinder #3
- Rough idle or stalling
- Decreased fuel efficiency
- Engine hesitation or lack of power
How to Fix P1263 Ford
- Diagnose the exact cause of the high to low side short using a diagnostic scanner and multimeter.
- Inspect the wiring harness, connectors, and fuel injector in Cylinder #3 for any damage or corrosion.
- Repair or replace any damaged wiring, connectors, or components in the fuel injector circuit.
- Clear the DTC and reset the ECM to see if the issue is resolved.
- Test drive the vehicle to ensure that the problem has been fixed and the symptoms have disappeared.
Cost to Fix P1263 Ford
The typical repair costs for addressing a P1263 Ford code can vary depending on the specific cause of the issue. In general, the parts required for the repair, such as a new wiring harness, fuel injector, or ECM, can range from $100 to $500 or more. The labor costs for diagnosing and repairing the high to low side short can add another $100 to $300 or more, depending on the shop's hourly rates. Overall, the total repair costs for this issue may range from $200 to $800 or higher. It's recommended to consult with a professional mechanic or dealership to get an accurate estimate based on the specific circumstances of your vehicle.
Tech Notes for P1263 Ford
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