AutoCodes – Ford – P1245 2002 Ford F150

P1245 2002 Ford F150 Code - Alternator Load Input Failed Low

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, Broken Alternator Belt, Alternator/Generator harness is open or shorted. 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: P1245 2002 Ford F150 indicates Alternator Load Input Failed Low.
Common causes: Common causes include Faulty Alternator/Generator, Broken Alternator Belt, Alternator/Generator harness is open or shorted.
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 2,136

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 21, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1245 2002 Ford F150 Description

The Powertrain Control Module (PCM) monitors generator load from the generator/regulator in the form of frequency. The fault indicates the input is lower than the load should be in normal operation. The load input could be low when no generator output exists.

OBDII Code P1245 2002 Ford F150 - Alternator Load Input Failed Low - AutoCodes.com — P1245 2002 Ford F150 Code - Alternator Load Input Failed Low

What does this mean?

What are the Possible Causes of the DTC P1245 2002 Ford F150?

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

How to Fix the DTC P1245 2002 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 P1245 2002 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 P1245 2002 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 P1245 2002 Ford F150 Code

1. What are the common symptoms of OBDII code P1245 on a 2002 Ford F150?

When the alternator load input fails low, you may experience dimming lights, a dead battery, erratic electrical issues, or the vehicle stalling.

2. What are the possible causes of OBDII code P1245 on a 2002 Ford F150?

Common causes include a faulty alternator, damaged wiring or connectors in the alternator circuit, a weak battery, or a malfunctioning voltage regulator.

3. How can I diagnose the alternator load input failure on my 2002 Ford F150?

To diagnose the issue, you can use a multimeter to check the voltage output of the alternator, inspect the wiring and connectors for any damage, and test the battery to ensure it is functioning properly.

4. Can I still drive my 2002 Ford F150 with OBDII code P1245?

It is not recommended to drive your vehicle with this code as it can lead to further electrical system issues, stalling, or a dead battery. It's best to address the problem promptly.

5. How can I repair OBDII code P1245 on my 2002 Ford F150?

Repair options include replacing the alternator if it is faulty, repairing or replacing damaged wiring or connectors, ensuring the battery is in good condition, and checking the voltage regulator for proper operation.

6. Will resetting the OBDII code P1245 on my 2002 Ford F150 make the issue go away?

Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, it is likely to return. It's essential to diagnose and repair the problem causing the code.

7. Is it safe to continue driving if my alternator load input has failed low on my 2002 Ford F150?

Driving with a faulty alternator can lead to a drained battery, stalling, or other electrical malfunctions. It's best to address the issue promptly to avoid potential safety hazards on the road.

8. Can a DIY enthusiast fix OBDII code P1245 on a 2002 Ford F150?

Depending on your skill level, you may be able to diagnose and repair the issue yourself. However, if you are not experienced with automotive electrical systems, it's recommended to seek professional help.

9. What is the typical cost to repair OBDII code P1245 on a 2002 Ford F150?

The cost of repair can vary depending on the specific issue causing the code. Replacing the alternator, repairing wiring, or addressing other factors can range from a few hundred to over a thousand dollars.

10. How urgent is it to address OBDII code P1245 on a 2002 Ford F150?

It is essential to address this code promptly to prevent potential damage to your vehicle's electrical system, avoid stalling or battery issues, and ensure safe and reliable operation of your Ford F150.