AutoCodes – Ford – P1246 1997 Ford F150

P1246 1997 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 1997 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,462

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1246 1997 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 1997 Ford F150 - Alternator Load Input Failed - AutoCodes.com — P1246 1997 Ford F150 Code - Alternator Load Input Failed

What does this mean?

What are the Possible Causes of the DTC P1246 1997 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 1997 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 1997 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 1997 Ford F150 code?

Need more information on how to fix the P1246 1997 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1246 1997 Ford F150 code diagnosed by a professional: Find a repair shop in your area

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 1997 Ford F150 Code

1. What are the common symptoms of OBDII code P1246 on a 1997 Ford F150?

The common symptoms of OBDII code P1246 on a 1997 Ford F150 include dimming lights, battery warning light on the dashboard, and difficulty starting the vehicle.

2. What does the OBDII code P1246 "Alternator Load Input Failed" mean on a 1997 Ford F150?

The OBDII code P1246 on a 1997 Ford F150 indicates that there is a malfunction in the alternator load input circuit, which can affect the charging system of the vehicle.

3. What are the possible causes of OBDII code P1246 on a 1997 Ford F150?

Possible causes of OBDII code P1246 on a 1997 Ford F150 include a faulty alternator, damaged wiring in the alternator load input circuit, or a malfunctioning alternator load input sensor.

4. How can I diagnose the issue causing OBDII code P1246 on my 1997 Ford F150?

To diagnose the issue causing OBDII code P1246 on a 1997 Ford F150, you can start by checking the alternator, inspecting the wiring for any damage, and testing the alternator load input sensor using a multimeter.

5. Can I still drive my 1997 Ford F150 with OBDII code P1246 "Alternator Load Input Failed"?

It is not recommended to drive your 1997 Ford F150 with OBDII code P1246 "Alternator Load Input Failed" as it can lead to a drained battery and potential stalling of the vehicle.

6. How can I repair OBDII code P1246 on a 1997 Ford F150?

To repair OBDII code P1246 on a 1997 Ford F150, you may need to replace the alternator if it is faulty, repair any damaged wiring in the alternator load input circuit, or replace the alternator load input sensor.

7. What are the dangers of ignoring OBDII code P1246 on a 1997 Ford F150?

Ignoring OBDII code P1246 on a 1997 Ford F150 can lead to a dead battery, potential damage to the electrical system, and ultimately, the vehicle stalling while driving.

8. How much does it cost to fix OBDII code P1246 on a 1997 Ford F150?

The cost to fix OBDII code P1246 on a 1997 Ford F150 can vary depending on the exact cause of the issue, but it may range from $200 to $600 including parts and labor.

9. Is OBDII code P1246 a common issue on 1997 Ford F150 vehicles?

OBDII code P1246 "Alternator Load Input Failed" is not a very common issue on 1997 Ford F150 vehicles, but it can occur due to various factors affecting the alternator and its circuitry.

10. Can a DIY enthusiast fix OBDII code P1246 on a 1997 Ford F150?

A DIY enthusiast with some automotive repair experience may be able to fix OBDII code P1246 on a 1997 Ford F150, especially if they have the necessary tools and resources to diagnose and repair the issue effectively.