AutoCodes – Ford – P1246 2000 Ford F150

P1246 2000 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 2000 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 2,535

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 2000 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 2000 Ford F150 - Alternator Load Input Failed - AutoCodes.com — P1246 2000 Ford F150 Code - Alternator Load Input Failed

What does this mean?

What are the Possible Causes of the DTC P1246 2000 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 2000 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 2000 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.

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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 2000 Ford F150 Code

1. What are the common symptoms of OBDII code P1246 on a 2000 Ford F150?

The common symptoms of OBDII code P1246 on a 2000 Ford F150 include dimming or flickering lights, battery warning light on the dashboard, and issues with the vehicle's electrical system.

2. What does the OBDII code P1246 on a 2000 Ford F150 mean?

OBDII code P1246 on a 2000 Ford F150 indicates that the alternator load input has failed, meaning that the vehicle's charging system is not functioning properly.

3. What are the possible causes of OBDII code P1246 on a 2000 Ford F150?

Possible causes of OBDII code P1246 on a 2000 Ford F150 include a faulty alternator, damaged wiring or connectors in the charging system, or a failing battery.

4. How can I diagnose the issue related to OBDII code P1246 on my 2000 Ford F150?

To diagnose the issue related to OBDII code P1246 on your 2000 Ford F150, you can start by checking the alternator output using a multimeter, inspecting the wiring and connectors for any damage, and testing the battery's condition.

5. Can I still drive my 2000 Ford F150 with OBDII code P1246?

It is not recommended to drive your 2000 Ford F150 with OBDII code P1246, as a malfunctioning alternator can lead to a dead battery and potential loss of power while driving.

6. How much does it typically cost to repair OBDII code P1246 on a 2000 Ford F150?

The cost to repair OBDII code P1246 on a 2000 Ford F150 can vary depending on the specific cause of the issue, but it may range from $200 to $800, including parts and labor.

7. Are there any DIY repair tips for fixing OBDII code P1246 on a 2000 Ford F150?

If you have experience working on vehicles, you can attempt to repair OBDII code P1246 on your 2000 Ford F150 by checking and replacing the alternator, inspecting and repairing any damaged wiring, and testing the battery.

8. What are the consequences of ignoring OBDII code P1246 on a 2000 Ford F150?

Ignoring OBDII code P1246 on a 2000 Ford F150 can lead to a drained battery, potential damage to other electrical components, and eventually, the vehicle may not start.

9. How long does it take to repair OBDII code P1246 on a 2000 Ford F150?

The repair time for OBDII code P1246 on a 2000 Ford F150 can vary depending on the extent of the issue, but it typically takes a few hours to a full day to diagnose and fix the problem.

10. Is it necessary to reset the OBDII code P1246 after repairing the issue on a 2000 Ford F150?

Yes, it is important to reset the OBDII code P1246 after repairing the issue on a 2000 Ford F150 to clear the error code from the vehicle's system and ensure that the problem has been resolved.