P1246 2009 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 2009 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.
Code P1246 2009 Ford Fusion Description
What are the Possible Causes of the DTC P1246 2009 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 2009 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 2009 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.
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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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