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Engine-Codes – Ford – P1245 1997 Ford F150

P1245 1997 Ford F150 Code - Alternator Load Input Failed Low

Quick Answer

The P1245 diagnostic trouble code (DTC) for a 1997 Ford F150 indicates that the alternator load input has failed low. Common causes include Faulty alternator unable to provide sufficient power output, Damaged wiring or connectors in the alternator circuit, Failing voltage regulator affecting the alternator's performance. 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 1997 Ford F150 indicates Alternator Load Input Failed Low.
Common causes
Common causes include Faulty alternator unable to provide sufficient power output, Damaged wiring or connectors in the alternator circuit, Failing voltage regulator affecting the alternator's performance.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P1245 1997 Ford F150 Description

The P1245 diagnostic trouble code (DTC) for a 1997 Ford F150 indicates that the alternator load input has failed low. This means that the power output from the alternator is lower than the expected level, which can lead to various electrical issues within the vehicle. The alternator is responsible for charging the battery and providing power to the electrical components of the vehicle while the engine is running. When the alternator load input fails low, it can result in a lack of sufficient power supply to the vehicle's systems, leading to potential performance issues.

OBDII Code P1245 1997 Ford F150 - Alternator Load Input Failed Low
P1245 1997 Ford F150 Code - Alternator Load Input Failed Low

Common Causes of P1245 1997 Ford F150

  1. Faulty alternator unable to provide sufficient power output.
  2. Damaged wiring or connectors in the alternator circuit.
  3. Failing voltage regulator affecting the alternator's performance.
  4. Weak or failing battery unable to hold a charge.
  5. Issues with the serpentine belt that drives the alternator.

Symptoms of P1245 1997 Ford F150

  1. Dimming or flickering lights on the dashboard or exterior of the vehicle.
  2. Difficulty starting the vehicle, especially in cold weather.
  3. Erratic behavior of electrical components such as power windows or radio.
  4. Battery warning light illuminated on the dashboard.
  5. Engine stalling while driving, especially at low speeds.

How to Fix P1245 1997 Ford F150

  1. Begin by performing a thorough inspection of the alternator, wiring, and connectors for any visible damage or loose connections.
  2. Test the alternator's output using a multimeter to determine if it is functioning within the specified range.
  3. Check the voltage regulator for proper operation and replace if necessary.
  4. Test the battery's condition and replace if it is weak or failing.
  5. Inspect the serpentine belt for wear or damage and replace if needed.

Cost to Fix P1245 1997 Ford F150

The typical repair costs for addressing a P1245 code on a 1997 Ford F150 can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that the diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower prices. For a more accurate estimate, it is recommended to obtain quotes from local auto repair shops.

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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 1997 Ford F150 Code

1. What are common symptoms of OBDII code P1245 on a 1997 Ford F150?

- Common symptoms include dimming lights, difficulty starting the vehicle, and a dashboard warning light indicating alternator issues.

2. What does the OBDII code P1245 "Alternator Load Input Failed Low" mean for a 1997 Ford F150?

- This code indicates that the vehicle's powertrain control module (PCM) has detected a low input signal from the alternator in relation to the vehicle's electrical load.

3. What are possible causes of OBDII code P1245 on a 1997 Ford F150?

- Possible causes include a faulty alternator, damaged wiring or connectors in the alternator circuit, a defective battery, or a malfunctioning PCM.

4. How can I diagnose the issue causing OBDII code P1245 on my 1997 Ford F150?

- A thorough inspection of the alternator, battery, and related wiring is recommended. Testing the alternator's output voltage and checking for any loose or damaged connections can help pinpoint the issue.

5. Can driving with OBDII code P1245 on a 1997 Ford F150 cause further damage?

- Continuing to drive with this code may lead to battery draining, electrical system malfunctions, and eventual stalling of the vehicle. It is advisable to address the issue promptly.

6. What are some repair tips for fixing OBDII code P1245 on a 1997 Ford F150?

- Repair tips include checking and replacing the alternator if necessary, inspecting and repairing any damaged wiring or connectors, and ensuring the battery is in good condition.

7. Is it safe to reset the OBDII code P1245 on a 1997 Ford F150 without fixing the underlying issue?

- It is not recommended to simply reset the code without addressing the root cause, as the problem will likely reoccur, potentially causing further damage to the vehicle.

8. How much does it typically cost to repair OBDII code P1245 on a 1997 Ford F150?

- The cost of repair can vary depending on the specific issue causing the code. Replacing the alternator or repairing wiring/connectors can range from $200 to $600 or more, including parts and labor.

9. Can I fix OBDII code P1245 on a 1997 Ford F150 myself, or should I seek professional help?

- While some DIY enthusiasts may be able to address the issue themselves, diagnosing and repairing electrical system problems can be complex. It is advisable to consult a professional mechanic for proper diagnosis and repair.

10. How often does OBDII code P1245 occur in 1997 Ford F150 vehicles, and is it a common issue?

- While not as common as some other OBDII codes, P1245 can still occur in 1997 Ford F150 vehicles, especially as they age and components wear out. Proper maintenance and timely repairs can help prevent this issue.

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