P1246 2009 Ford Fusion Code - Alternator Load Input Failed
Quick Answer
The P1246 diagnostic trouble code (DTC) for a 2009 Ford Fusion indicates that the alternator load input has failed. Common causes include Faulty alternator, Damaged wiring or connectors, Defective alternator regulator. 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 2009 Ford Fusion indicates Alternator Load Input Failed.
- Common causes
- Common causes include Faulty alternator, Damaged wiring or connectors, Defective alternator regulator.
- 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 P1246 2009 Ford Fusion Description
The P1246 diagnostic trouble code (DTC) for a 2009 Ford Fusion indicates that the alternator load input has failed. This means that the vehicle's onboard computer has detected a problem with the alternator's ability to provide the necessary electrical power to the vehicle's systems. The alternator is responsible for charging the battery and providing power to the electrical components of the vehicle when the engine is running. When the alternator load input fails, it can lead to a variety of issues that can affect the vehicle's performance and overall functionality.
Common Causes of P1246 2009 Ford Fusion
- Faulty alternator.
- Damaged wiring or connectors.
- Defective alternator regulator.
- Issues with the vehicle's battery, such as low charge or damage.
- Poor electrical connections or grounds.
Symptoms of P1246 2009 Ford Fusion
- Dimming or flickering lights on the dashboard or exterior of the vehicle.
- Difficulty starting the vehicle or a dead battery.
- Electrical components not functioning properly, such as power windows or radio.
- Engine stalling or running rough due to lack of power.
How to Fix P1246 2009 Ford Fusion
- Begin by conducting a thorough inspection of the alternator, wiring, and connectors to identify any visible damage or issues.
- Test the alternator's output using a multimeter to determine if it is providing the correct voltage to the vehicle's electrical system.
- Check the alternator regulator for proper functioning and replace if necessary.
- Inspect the vehicle's battery to ensure it is holding a charge and replace if needed.
- Clear the DTC from the vehicle's onboard computer using a diagnostic scanner after completing the repairs.
Cost to Fix P1246 2009 Ford Fusion
The typical repair costs for addressing an alternator load input failure on a 2009 Ford Fusion can range from $300 to $800, including parts and labor. However, it is essential to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops commonly charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops often charge less. It is advisable to check local rates for a more precise estimate before proceeding with the repairs.
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Frequently Asked Questions about P1246 2009 Ford Fusion Code
1. What does OBDII code P1246 mean on a 2009 Ford Fusion?
P1246 indicates that the Alternator Load Input signal has failed, meaning the Powertrain Control Module (PCM) is not receiving proper input from the alternator regarding its load or output.
2. What are the common symptoms of code P1246 in a 2009 Ford Fusion?
Symptoms may include a battery warning light on the dashboard, dimming lights, weak or dead battery, difficulty starting the engine, and potential stalling while driving.
3. What causes the P1246 code to appear?
The most common causes are a faulty alternator, damaged or corroded wiring or connectors, a failed PCM, or issues with the battery, such as loose terminals or poor ground connections.
4. Can I drive my 2009 Ford Fusion with a P1246 code?
It is not recommended to drive with this code, as it may lead to battery depletion and cause the vehicle to stall unexpectedly, potentially creating a safety hazard.
5. How do I diagnose the P1246 code on my 2009 Ford Fusion?
Start by checking the alternator for proper operation, inspect the wiring and connectors for damage or corrosion, test the battery, and verify that the PCM is functioning correctly.
6. Does a faulty alternator always cause code P1246?
No, while a faulty alternator is a common cause, the issue could also stem from wiring problems, a weak battery, or a malfunctioning PCM.
7. How can I fix the P1246 code on my 2009 Ford Fusion?
Repairs may include replacing the alternator, cleaning or replacing damaged wiring and connectors, securing battery terminals, or reprogramming/replacing the PCM if necessary.
8. How much does it cost to fix a P1246 code in a 2009 Ford Fusion?
The cost varies depending on the root cause. Replacing an alternator may cost $300–$700, while addressing wiring issues or reprogramming the PCM could cost less.
9. Can a weak battery trigger the P1246 code?
Yes, a weak or failing battery can cause the alternator to work harder, potentially triggering the P1246 code due to improper load signals.
10. Will clearing the P1246 code with a scanner fix the problem?
Clearing the code will not fix the underlying issue. The root cause must be diagnosed and addressed to prevent the code from returning.
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