Engine-CodesFord – P1246 2010 Ford Fusion

P1246 2010 Ford Fusion Code - Alternator Load Input Failed

Quick Answer

The P1246 code on a 2010 Ford Fusion indicates that the alternator load input has failed. Common causes include Faulty alternator, Damaged wiring or connectors, Malfunctioning alternator control module. 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 2010 Ford Fusion indicates Alternator Load Input Failed.
Common causes
Common causes include Faulty alternator, Damaged wiring or connectors, Malfunctioning alternator control module.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P1246 2010 Ford Fusion Description

The P1246 code on a 2010 Ford Fusion indicates that the alternator load input has failed. The alternator is a crucial component of the vehicle's charging system, responsible for generating electrical power to charge the battery and power the electrical components of the car while the engine is running. The alternator load input failure means that the vehicle's onboard computer is not receiving the expected electrical load information from the alternator, which can lead to various issues with the vehicle's electrical system.

OBDII Code P1246 2010 Ford Fusion - Alternator Load Input Failed
P1246 2010 Ford Fusion Code - Alternator Load Input Failed

Common Causes of P1246 2010 Ford Fusion

  1. Faulty alternator
  2. Damaged wiring or connectors
  3. Malfunctioning alternator control module
  4. Issues with the vehicle's computer system
  5. Loose or corroded battery connections

Symptoms of P1246 2010 Ford Fusion

  1. Dimming or flickering lights
  2. Battery warning light on the dashboard
  3. Difficulty starting the vehicle
  4. Electrical components not functioning properly
  5. Engine stalling or running rough

How to Fix P1246 2010 Ford Fusion

  1. Diagnose the issue by checking the alternator, wiring, connectors, and control module for any visible damage or signs of malfunction.
  2. Test the alternator's output using a multimeter to ensure it is generating the correct voltage.
  3. Replace the alternator if it is found to be faulty, ensuring that the new alternator is compatible with the vehicle's make and model.
  4. Repair or replace any damaged wiring or connectors.
  5. Reset the vehicle's computer system to clear the error code and ensure proper communication with the alternator.

Cost to Fix P1246 2010 Ford Fusion

The cost of repairing an alternator load input failure on a 2010 Ford Fusion can vary depending on the extent of the damage and the specific parts needed for the repair. On average, the cost of replacing an alternator ranges from $300 to $800, including parts and labor. Additional costs may apply if there are other issues with the vehicle's electrical system that need to be addressed. It is recommended to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of the vehicle. Labor rates at auto repair shops typically range from $80 to $150 per hour, but can vary based on location and shop rates.

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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 2010 Ford Fusion Code

1. What does the OBDII code P1246 mean on a 2010 Ford Fusion?

P1246 indicates that the Alternator Load Input signal has failed, meaning the vehicle's PCM (Powertrain Control Module) is not receiving proper data from the alternator about its load or output.

2. What are the common symptoms of the P1246 code in a 2010 Ford Fusion?

Symptoms include an illuminated check engine light, charging system warning light, battery not charging properly, dim headlights, or difficulty starting the vehicle.

3. What causes the P1246 code to appear on a 2010 Ford Fusion?

Common causes include a faulty alternator, damaged or corroded wiring to the alternator, a defective PCM, or a bad alternator load input sensor.

4. Can a weak or failing battery trigger the P1246 code in a 2010 Ford Fusion?

Yes, a weak or failing battery can cause communication issues between the alternator and PCM, potentially triggering the P1246 code.

5. How do you diagnose the P1246 code on a 2010 Ford Fusion?

Diagnosis involves inspecting the alternator, checking the wiring and connectors for damage or corrosion, testing the battery, and verifying the alternator's output using a multimeter.

6. Can I drive my 2010 Ford Fusion with the P1246 code active?

It is not recommended to drive the vehicle with this code active, as it may lead to battery discharge, loss of electrical power, or a breakdown.

7. How is the P1246 code typically fixed on a 2010 Ford Fusion?

Common fixes include repairing or replacing the alternator, cleaning or replacing damaged wiring, and in rare cases, replacing the PCM if it is faulty.

8. How much does it cost to fix the P1246 code on a 2010 Ford Fusion?

Repair costs can range from $100 to $500 or more, depending on whether the alternator, wiring, or PCM needs replacement.

9. Does the P1246 code always mean the alternator is faulty in a 2010 Ford Fusion?

No, the issue could also stem from wiring problems, a weak battery, or a PCM malfunction, so proper diagnosis is essential.

10. Can clearing the P1246 code solve the issue on a 2010 Ford Fusion?

Clearing the code may remove the check engine light temporarily, but the underlying issue must be addressed to prevent the code from returning.

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