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P1246 Ford Code - Alternator Load Input Failed

Quick Answer

The P1246 diagnostic trouble code for Ford vehicles indicates that there is a failure in the alternator load input circuit. Common causes include Faulty alternator, Damaged wiring or connectors, Malfunctioning alternator load input sensor. 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
P1246 Ford indicates Alternator Load Input Failed.
Common causes
Common causes include Faulty alternator, Damaged wiring or connectors, Malfunctioning alternator load input sensor.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1246 Ford Description

The P1246 diagnostic trouble code for Ford vehicles indicates that there is a failure in the alternator load input circuit. The alternator plays a crucial role in the vehicle's electrical system by generating power to charge the battery and supply electricity to various components. The load input refers to the signal that the alternator receives to adjust its output based on the electrical demands of the vehicle.

OBDII Code P1246 Ford - Alternator Load Input Failed
P1246 Ford Code - Alternator Load Input Failed

Common Causes of P1246 Ford

  1. Faulty alternator
  2. Damaged wiring or connectors
  3. Malfunctioning alternator load input sensor
  4. Issues with the vehicle's computer system
  5. Corrosion or poor connections in the electrical system

Symptoms of P1246 Ford

  1. Dimming or flickering lights
  2. Difficulty starting the engine
  3. Stalling while driving
  4. Battery warning light on the dashboard
  5. Loss of power steering or other electrical functions

How to Fix P1246 Ford

  1. Begin by conducting a thorough inspection of the alternator, wiring, and connectors to identify any visible damage or faults.
  2. Test the alternator load input sensor to determine if it is functioning correctly.
  3. Check the vehicle's computer system for any error codes or malfunctions related to the alternator load input.
  4. Replace any damaged wiring, connectors, or components as needed.
  5. Reset the error code and test the vehicle to ensure that the alternator is now functioning properly.

Cost to Fix P1246 Ford

The cost of repairing an alternator load input failure can vary depending on the extent of the issue and the specific components that need replacement. On average, the parts for this repair can range from $100 to $300, while labor costs may add another $100 to $200. Overall, the total repair cost could be between $200 and $500. However, it is important to note that these are rough estimates, and actual costs may differ based on the factors mentioned earlier. It's recommended to consult with a qualified mechanic or repair shop for a more accurate assessment.

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Information for Specific Ford Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1246 Ford Code

1. What are the common symptoms of OBDII code P1246 Ford (Alternator Load Input Failed)?

- Common symptoms include dimming lights, weak battery, dashboard warning lights related to charging system, and potential stalling or rough idling.

2. What are the possible causes of OBDII code P1246 Ford?

- The code may be triggered by a faulty alternator, damaged wiring or connectors in the alternator circuit, or a malfunction in the alternator load input sensor.

3. How can I diagnose the issue causing OBDII code P1246 Ford?

- A thorough inspection of the alternator, wiring, and load input sensor is recommended. Testing the alternator output and load input sensor voltage can help pinpoint the issue.

4. Can driving with OBDII code P1246 Ford cause further damage to the vehicle?

- Continuing to drive with this code can lead to battery drainage, potential stalling, and damage to other electrical components in the vehicle.

5. How can I repair OBDII code P1246 Ford (Alternator Load Input Failed)?

- Repair typically involves replacing a faulty alternator, repairing damaged wiring or connectors, or replacing the load input sensor as needed.

6. Is it safe to drive my vehicle with OBDII code P1246 Ford present?

- It is not recommended to drive the vehicle with this code present, as it can lead to battery failure and potential stalling while driving.

7. Can a DIY enthusiast fix OBDII code P1246 Ford, or is professional help necessary?

- Depending on the root cause, some DIY enthusiasts may be able to address the issue by replacing the alternator, repairing wiring, or replacing the load input sensor. However, professional help is recommended for accurate diagnosis and repair.

8. How much does it typically cost to repair OBDII code P1246 Ford?

- The cost of repair can vary depending on the specific cause of the code, but it may range from a couple hundred to a few hundred dollars for parts and labor.

9. How often does OBDII code P1246 Ford occur in Ford vehicles?

- This code can occur in Ford vehicles equipped with OBDII systems, particularly in models with alternator or charging system issues.

10. Can a temporary fix be applied to clear OBDII code P1246 Ford, or is a permanent repair necessary?

- Clearing the code temporarily may be possible by resetting the vehicle's computer, but a permanent repair is essential to prevent recurring issues with the alternator load input.

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