AutoCodes – Ford – P1246 2001 Ford F150

P1246 2001 Ford F150 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 2001 Ford F150 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 3,119

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 2001 Ford F150 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 2001 Ford F150 - Alternator Load Input Failed - AutoCodes.com — P1246 2001 Ford F150 Code - Alternator Load Input Failed

What does this mean?

What are the Possible Causes of the DTC P1246 2001 Ford F150?

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 2001 Ford F150?

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 2001 Ford F150 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 2001 Ford F150 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 2001 Ford F150 Code

1. What are the common symptoms of OBDII code P1246 on a 2001 Ford F150?

The common symptoms of OBDII code P1246 on a 2001 Ford F150 include dimming or flickering headlights, a dead battery, and issues with the vehicle's electrical system.

2. What does the OBDII code P1246 "Alternator Load Input Failed" mean on a 2001 Ford F150?

The OBDII code P1246 on a 2001 Ford F150 indicates that there is a malfunction in the alternator load input circuit, which can affect the vehicle's charging system.

3. What are the possible causes of OBDII code P1246 on a 2001 Ford F150?

Possible causes of OBDII code P1246 on a 2001 Ford F150 include a faulty alternator, damaged wiring or connectors in the alternator load input circuit, or a defective alternator load input sensor.

4. How can I diagnose the OBDII code P1246 on my 2001 Ford F150?

To diagnose OBDII code P1246 on a 2001 Ford F150, you can use a scan tool to check for any other related trouble codes, visually inspect the alternator and its connections, and test the alternator load input sensor for proper functionality.

5. Can I still drive my 2001 Ford F150 with OBDII code P1246 active?

It is not recommended to drive your 2001 Ford F150 with OBDII code P1246 active, as it may lead to a discharged battery and potential electrical system failures while on the road.

6. How can I repair OBDII code P1246 on my 2001 Ford F150?

To repair OBDII code P1246 on a 2001 Ford F150, you may need to replace the alternator, repair any damaged wiring or connectors in the alternator load input circuit, or replace the alternator load input sensor.

7. Is it safe to reset OBDII code P1246 on a 2001 Ford F150 without fixing the underlying issue?

It is not recommended to simply reset OBDII code P1246 on a 2001 Ford F150 without fixing the underlying issue, as the problem will likely persist and could lead to more severe electrical system issues.

8. How much does it typically cost to repair OBDII code P1246 on a 2001 Ford F150?

The cost to repair OBDII code P1246 on a 2001 Ford F150 can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, depending on the parts and labor required.

9. Can a DIY enthusiast fix OBDII code P1246 on a 2001 Ford F150?

While some DIY enthusiasts may have the skills to diagnose and repair OBDII code P1246 on a 2001 Ford F150, it is recommended to have the issue addressed by a professional mechanic to ensure proper repair and prevent further damage.

10. Will OBDII code P1246 on a 2001 Ford F150 cause the vehicle to fail an emissions test?

OBDII code P1246 on a 2001 Ford F150 may cause the vehicle to fail an emissions test, as it indicates a malfunction in the alternator load input circuit, which can impact the vehicle's overall performance and emissions control.