P1245 2003 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 2003 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.
Code P1245 2003 Ford F150 Description
What are the Possible Causes of the DTC P1245 2003 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 2003 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 2003 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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Frequently Asked Questions about P1245 2003 Ford F150 Code
1. What does the OBDII code P1245 mean on a 2003 Ford F150?
P1245 indicates that the Powertrain Control Module (PCM) has detected a low or failed alternator load input signal, which may affect charging system performance.
2. What are the common symptoms of code P1245 on a 2003 Ford F150?
Symptoms may include a dimming of lights, electrical accessories not working properly, a battery warning light, or difficulty starting the engine.
3. What causes the P1245 code on a 2003 Ford F150?
Common causes include a faulty alternator, damaged wiring or connectors in the alternator circuit, a failing battery, or a malfunctioning PCM.
4. Can a bad alternator cause the P1245 code to appear?
Yes, a failing alternator is one of the most common causes of the P1245 code, as it may not provide the proper load signal to the PCM.
5. How do I diagnose the P1245 code on a 2003 Ford F150?
Start by inspecting the alternator and battery for damage or wear, check wiring and connectors for corrosion or breaks, and use a multimeter to test charging system voltage.
6. Can I drive my 2003 Ford F150 with the P1245 code?
Driving with this code is not recommended, as it may lead to battery drain or complete loss of electrical power, potentially leaving you stranded.
7. How do I fix the P1245 code on a 2003 Ford F150?
Repairs may include replacing the alternator, repairing damaged wiring or connectors, cleaning corroded terminals, or replacing the battery if it's faulty.
8. Does a dead battery trigger the P1245 code on a 2003 Ford F150?
Yes, a weak or dead battery can cause the alternator load input to fail, potentially triggering the P1245 code.
9. Will clearing the P1245 code solve the issue on my 2003 Ford F150?
Clearing the code without addressing the underlying problem will not fix the issue, and the code is likely to return.
10. How much does it cost to fix the P1245 code on a 2003 Ford F150?
Repair costs vary depending on the cause but may range from $100 for minor wiring repairs to $500 or more for an alternator replacement.
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