AutoCodesBuick – P1F02 Buick

P1F02 Buick Code - Battery Charger Control Module Supply Voltage Sensor Circuit High Voltage

Quick Answer

The battery charger will diagnose its own systems and determine when a fault condition is present. 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
P1F02 Buick indicates Battery Charger Control Module Supply Voltage Sensor Circuit High Voltage.
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 896
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 P1F02 Buick Description

The battery charger will diagnose its own systems and determine when a fault condition is present. Diagnostics and system status is communicated from the battery charger to the hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for Diagnostic Trouble Code (DTC) information. This DTC is for the battery charger are internal measurements that verify the charger is performing properly. The battery charger measures internal voltages, currents, and temperatures and verifies they are within the proper range.
OBDII Code P1F02 Buick - Battery Charger Control Module Supply Voltage Sensor Circuit High Voltage - AutoCodes.com
P1F02 Buick Code - Battery Charger Control Module Supply Voltage Sensor Circuit High Voltage

What are the Possible Causes of the DTC P1F02 Buick?

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

How to Fix the DTC P1F02 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 P1F02 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.

Need more information about the P1F02 Buick code?

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Need Help with the 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 P1F02 Buick Code

What does the OBDII code P1F02 mean for a Buick?

The P1F02 code indicates a problem with the Battery Charger Control Module Supply Voltage Sensor Circuit, specifically detecting a high voltage condition.

What are the common symptoms of code P1F02 in a Buick?

Symptoms may include an illuminated check engine light, issues with charging the battery, reduced hybrid or electric vehicle functionality, or inconsistent voltage readings.

What causes the P1F02 code to appear in a Buick?

Common causes include a faulty battery charger control module, damaged wiring or connectors in the sensor circuit, or issues with the supply voltage sensor itself.

Can I drive my Buick with the P1F02 code active?

While the vehicle may still run, driving with this code active can lead to charging system failure or further electrical issues, so it’s best to address it promptly.

How is the P1F02 code diagnosed in a Buick?

A technician will use a scan tool to confirm the code, inspect the battery charger control module and related wiring, and test the voltage sensor for proper operation.

What parts might need to be replaced to fix the P1F02 code?

Potential parts include the battery charger control module, the supply voltage sensor, or damaged wiring and connectors associated with the circuit.

Can a dead battery cause the P1F02 code in a Buick?

A weak or failing battery is unlikely to directly cause this code, but it may exacerbate charging system issues or trigger related errors.

How much does it cost to repair code P1F02 in a Buick?

Repair costs can vary, typically ranging from $150 to $500 depending on whether the issue is with wiring, the sensor, or the battery charger control module.

Is the P1F02 code unique to Buicks?

No, the P1F02 code can appear in other GM vehicles, but the specific symptoms and solutions may vary depending on the model.

Can clearing the code fix the P1F02 issue in a Buick?

Clearing the code may temporarily reset the check engine light, but the underlying issue must be resolved to prevent the code from returning.

Discuss the causes and fixes for P1F02 Buick OBDII Code

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