AutoCodes – Ford – P1246 2008 Ford Fusion

P1246 2008 Ford Fusion Code - Alternator Load Input Failed

Quick Answer

The Powertrain Control Module (PCM) monitors generator load from the generator/regulator in the form of frequency. Common causes include Faulty Alternator/Generator, Alternator/Generator harness is open or shorted, Alternator/Generator circuit poor electrical connection. 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 2008 Ford Fusion indicates Alternator Load Input Failed.
Common causes: Common causes include Faulty Alternator/Generator, Alternator/Generator harness is open or shorted, Alternator/Generator circuit poor electrical connection.
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 Popularity 1,823

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1246 2008 Ford Fusion Description

The Powertrain Control Module (PCM) monitors generator load from the generator/regulator in the form of frequency. The frequency range is determined by the temperature of the voltage regulator where 97% represents full load, below 6% means no load.

OBDII Code P1246 2008 Ford Fusion - Alternator Load Input Failed - AutoCodes.com — P1246 2008 Ford Fusion Code - Alternator Load Input Failed

What does this mean?

What are the Possible Causes of the DTC P1246 2008 Ford Fusion?

Faulty Alternator/Generator
Alternator/Generator harness is open or shorted
Alternator/Generator circuit poor electrical connection
Damaged Powertrain Control Module (PCM)

How to Fix the DTC P1246 2008 Ford Fusion?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1246 2008 Ford Fusion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1246 2008 Ford Fusion code?

Need more information on how to fix the P1246 2008 Ford Fusion code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 2008 Ford Fusion Code

1. What are the common symptoms of OBDII code P1246 in a 2008 Ford Fusion?

The common symptoms of code P1246 include dimming or flickering lights, battery warning light illuminated on the dashboard, and difficulty starting the vehicle.

2. What does the OBDII code P1246 "Alternator Load Input Failed" indicate in a 2008 Ford Fusion?

Code P1246 indicates a malfunction in the alternator load input circuit, which may result in the alternator not properly charging the vehicle's battery.

3. What are the possible causes of OBDII code P1246 in a 2008 Ford Fusion?

Possible causes of code P1246 include a faulty alternator, damaged wiring or connectors in the alternator load input circuit, or a malfunctioning battery temperature sensor.

4. How can I diagnose the OBDII code P1246 in my 2008 Ford Fusion?

Diagnosing code P1246 typically involves checking the alternator output voltage, inspecting the wiring and connectors in the alternator load input circuit, and testing the battery temperature sensor for proper operation.

5. Can I still drive my 2008 Ford Fusion with OBDII code P1246 present?

It is not recommended to drive your vehicle with code P1246 present, as it may lead to a dead battery and potential stalling of the vehicle while driving.

6. How can I repair OBDII code P1246 in my 2008 Ford Fusion?

Repairing code P1246 may involve replacing the alternator, repairing or replacing damaged wiring or connectors, and ensuring the battery temperature sensor is functioning correctly.

7. Will resetting the OBDII code P1246 in my 2008 Ford Fusion make it go away permanently?

Resetting the code may clear it temporarily, but if the underlying issue causing code P1246 is not addressed, the code is likely to return.

8. Can a DIY enthusiast fix OBDII code P1246 in a 2008 Ford Fusion?

While some basic troubleshooting and repairs can be done by a DIY enthusiast, diagnosing and repairing code P1246 may require specialized tools and expertise, so it is recommended to consult a professional mechanic.

9. How much does it typically cost to repair OBDII code P1246 in a 2008 Ford Fusion?

The cost of repairing code P1246 can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. How urgent is it to address OBDII code P1246 in a 2008 Ford Fusion?

It is important to address code P1246 promptly to prevent potential damage to the vehicle's electrical system and ensure the proper functioning of the alternator and battery.