AutoCodes – Ford – P1245 1999 Ford F150

P1245 1999 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 1999 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 1,918

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 1999 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 1999 Ford F150 - Alternator Load Input Failed Low - AutoCodes.com — P1245 1999 Ford F150 Code - Alternator Load Input Failed Low

What does this mean?

What are the Possible Causes of the DTC P1245 1999 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 1999 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 1999 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 1999 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 1999 Ford F150 Code

1. What are the common symptoms of OBDII code P1245 in a 1999 Ford F150?

The common symptoms of OBDII code P1245 in a 1999 Ford F150 include dimming headlights, battery warning light on the dashboard, and problems with electrical components.

2. What does the OBDII code P1245 "Alternator Load Input Failed Low" mean for a 1999 Ford F150?

The code P1245 indicates that the alternator load input signal in the 1999 Ford F150 is reading lower than expected, suggesting a potential issue with the alternator or its components.

3. What are the possible causes of OBDII code P1245 in a 1999 Ford F150?

Possible causes of code P1245 in a 1999 Ford F150 include a faulty alternator, damaged wiring or connectors in the alternator circuit, or a failing battery.

4. How can I diagnose the OBDII code P1245 in my 1999 Ford F150?

To diagnose OBDII code P1245 in a 1999 Ford F150, you can perform a visual inspection of the alternator and its wiring, check the battery voltage, and use a multimeter to test the alternator output.

5. Can driving with OBDII code P1245 in a 1999 Ford F150 cause further damage?

Continuing to drive with OBDII code P1245 in a 1999 Ford F150 can potentially cause further damage to the electrical system, lead to battery drain, and result in a dead battery.

6. How do I repair OBDII code P1245 in my 1999 Ford F150?

To repair OBDII code P1245 in a 1999 Ford F150, you may need to replace the alternator, repair any damaged wiring or connectors, and ensure the battery is in good condition.

7. Can I reset the OBDII code P1245 in my 1999 Ford F150 by disconnecting the battery?

Disconnecting the battery may temporarily clear the code, but it is not a recommended method for resolving the underlying issue causing code P1245 in a 1999 Ford F150. Proper diagnosis and repair are necessary.

8. How much does it cost to fix OBDII code P1245 in a 1999 Ford F150?

The cost to fix OBDII code P1245 in a 1999 Ford F150 can vary depending on the extent of the issue and the parts and labor required. It is advisable to consult a mechanic for an accurate estimate.

9. Is it safe to drive my 1999 Ford F150 with OBDII code P1245?

It is not recommended to drive your 1999 Ford F150 with OBDII code P1245, as it can lead to potential electrical system issues and battery failure. It is best to address the problem promptly.

10. Will OBDII code P1245 in a 1999 Ford F150 cause the vehicle to stall?

While code P1245 itself may not cause the vehicle to stall, if left unresolved, it can lead to battery drainage, electrical system issues, and potentially result in stalling if the battery loses power while driving.