Engine-CodesFord – P1246 2011 Ford Fusion

P1246 2011 Ford Fusion Code - Alternator Load Input Failed

Quick Answer

The P1246 code for a 2011 Ford Fusion indicates that there is a failure in the alternator load input. Common causes include Faulty alternator, Damaged wiring or connectors in the alternator circuit, 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 2011 Ford Fusion indicates Alternator Load Input Failed.
Common causes
Common causes include Faulty alternator, Damaged wiring or connectors in the alternator circuit, 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.
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P1246 2011 Ford Fusion Description

The P1246 code for a 2011 Ford Fusion indicates that there is a failure in the alternator load input. The alternator is a crucial component of a vehicle's electrical system, responsible for charging the battery and providing power to various electrical components while the engine is running. The alternator load input refers to the signal that the vehicle's computer receives from the alternator to regulate the electrical load on the engine. When this signal fails, it can lead to various issues with the vehicle's electrical system and overall performance.

OBDII Code P1246 2011 Ford Fusion - Alternator Load Input Failed
P1246 2011 Ford Fusion Code - Alternator Load Input Failed

Common Causes of P1246 2011 Ford Fusion

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

Symptoms of P1246 2011 Ford Fusion

  1. Dimming or flickering lights
  2. Battery warning light illuminated on the dashboard
  3. Engine stalling or hesitation
  4. Electrical system malfunctions (e.g., power windows not working)
  5. Difficulty starting the vehicle

How to Fix P1246 2011 Ford Fusion

  1. Perform a thorough inspection of the alternator, wiring, and connectors for any visible damage.
  2. Test the alternator load input sensor and replace if necessary.
  3. Check and repair any faulty wiring or connectors in the alternator circuit.
  4. Reset the fault code and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, consult a professional mechanic for further diagnosis and repair.

Cost to Fix P1246 2011 Ford Fusion

The typical repair costs for addressing a P1246 code on a 2011 Ford Fusion can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Additionally, factors such as location, vehicle make and model, and engine type can also impact the overall cost of the repair.

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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 2011 Ford Fusion Code

1. What does the OBDII code P1246 mean on a 2011 Ford Fusion?

P1246 indicates a failure in the alternator load input circuit, which means the vehicle's PCM is not receiving a proper signal from the alternator about its load or operation.

2. What are the symptoms of code P1246 in a 2011 Ford Fusion?

Common symptoms include the battery warning light illuminating, electrical system malfunctions, dim or flickering lights, and possible engine stalling.

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

The most common causes include a faulty alternator, damaged wiring or connectors in the alternator circuit, a failing PCM, or a weak or failing battery.

4. Can I drive my 2011 Ford Fusion with the P1246 code?

Driving with this code is not recommended as it could lead to electrical system failures, battery drainage, and potential engine stalling.

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

Start by inspecting the alternator and its wiring for damage or loose connections. Test the alternator's output and check the battery's charge level. Use a multimeter to verify continuity in the alternator load input circuit.

6. How is the P1246 code typically repaired?

Repairs may include replacing a faulty alternator, repairing or replacing damaged wiring or connectors, recharging or replacing the battery, or in rare cases, reprogramming or replacing the PCM.

7. Can a weak battery cause the P1246 code on a 2011 Ford Fusion?

Yes, a weak or failing battery can trigger this code because it can affect the alternator's ability to properly communicate with the PCM.

8. Is the alternator always the problem when P1246 is triggered?

No, while the alternator is a common cause, the issue could also stem from damaged wiring, a faulty battery, or a PCM malfunction.

9. What tools do I need to troubleshoot the P1246 code?

You’ll need a multimeter to test electrical continuity, a diagnostic scan tool to read live data from the alternator and PCM, and possibly a battery tester.

10. What happens if the P1246 code is ignored?

Ignoring this code can lead to battery failure, electrical system issues, and eventual engine stalling, which could leave you stranded.

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