AutoCodes – Buick – P1F03 Buick

P1F03 Buick Code - Battery Charger Control Module Supply Voltage Performance

Quick Answer

The battery charger contains several internal sensor diagnostics that require the vehicle AC supply to be in the proper range. Common causes include Faulty Battery Charger, Battery Charger harness is open or shorted, Battery Charger 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
P1F03 Buick indicates Battery Charger Control Module Supply Voltage Performance.
Common causes
Common causes include Faulty Battery Charger, Battery Charger harness is open or shorted, Battery Charger 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.
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Code Popularity 1,077
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 25, 2020
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Code P1F03 Buick Description

The battery charger contains several internal sensor diagnostics that require the vehicle AC supply to be in the proper range. These diagnostics are internal battery charger diagnostics, but need the correct AC voltage to run properly.
OBDII Code P1F03 Buick - Battery Charger Control Module Supply Voltage Performance - AutoCodes.com
P1F03 Buick Code - Battery Charger Control Module Supply Voltage Performance

What are the Possible Causes of the DTC P1F03 Buick?

  • Faulty Battery Charger
  • Battery Charger harness is open or shorted
  • Battery Charger circuit poor electrical connection

How to Fix the DTC P1F03 Buick?

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 P1F03 Buick 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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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 P1F03 Buick Code

1. What does the OBDII code P1F03 mean on a Buick?

P1F03 indicates an issue with the Battery Charger Control Module's supply voltage, suggesting the voltage is outside the expected range.

2. What are the common symptoms of a P1F03 code on a Buick?

Symptoms include a check engine light, reduced charging system performance, possible battery charging issues, and limited electric motor functionality in hybrid or electric models.

3. What causes the P1F03 code to appear on a Buick?

Common causes include a faulty battery charger control module, loose or corroded wiring, poor electrical connections, or a failing battery.

4. Can a bad battery trigger the P1F03 code on a Buick?

Yes, a degraded or defective battery can cause supply voltage issues, potentially triggering the P1F03 code.

5. How do you diagnose a P1F03 code on a Buick?

Diagnosis involves checking the battery charger control module, inspecting wiring and connectors for damage or corrosion, and testing the battery and related charging components.

6. Can driving with a P1F03 code damage my Buick?

Driving with this code may lead to further electrical issues or reduced charging system performance, potentially stranding the vehicle if the battery depletes.

7. How do you fix a P1F03 code on a Buick?

Repairs typically involve replacing or repairing damaged wiring, cleaning corroded connections, updating module software, or replacing the battery charger control module if necessary.

8. How much does it cost to fix the P1F03 code on a Buick?

Repair costs vary depending on the issue, but replacing the battery charger control module can range from $500 to $1,500, plus labor.

9. Can a software update resolve the P1F03 code on a Buick?

In some cases, a software update for the battery charger control module may fix the issue, but this depends on the specific vehicle and circumstances.

10. Is the P1F03 code specific to hybrid or electric Buicks?

Yes, it is more common in hybrid or electric models, as it relates to the battery charger control module and the charging system.

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