AutoCodes – Buick – P1F65 Buick

P1F65 Buick Code - Hybrid/EV System Voltage Discharge Circuit High Voltage

Quick Answer

This is an internal fault detection of the power inverter module, often referred to as the drive motor generator power inverter module. Common causes include Faulty Power Inverter Module, Power Inverter Module harness is open or shorted, Power Inverter Module 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: P1F65 Buick indicates Hybrid/EV System Voltage Discharge Circuit High Voltage.
Common causes: Common causes include Faulty Power Inverter Module, Power Inverter Module harness is open or shorted, Power Inverter Module 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 818

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1F65 Buick Description

This is an internal fault detection of the power inverter module, often referred to as the drive motor generator power inverter module. This fault is handled inside the power inverter module, and no external circuits are involved.

OBDII Code P1F65 Buick - Hybrid/EV System Voltage Discharge Circuit High Voltage - AutoCodes.com — P1F65 Buick Code - Hybrid/EV System Voltage Discharge Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1F65 Buick?

Faulty Power Inverter Module
Power Inverter Module harness is open or shorted
Power Inverter Module circuit poor electrical connection

How to Fix the DTC P1F65 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 P1F65 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 P1F65 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 P1F65 Buick Code

1. What does the OBDII code P1F65 mean on a Buick?

P1F65 indicates an issue with the Hybrid/EV system's voltage discharge circuit, typically related to high voltage being detected where it shouldnâ€™t be.

2. What are the common symptoms of the P1F65 code?

Symptoms may include warning lights on the dashboard, reduced or no electric drive functionality, limited performance, or the vehicle failing to start.

3. What causes the P1F65 code to appear in a Buick?

This code is often caused by a fault in the voltage discharge circuit, a malfunctioning high-voltage battery, wiring issues, or a problem with the power inverter module.

4. Can I continue driving my Buick with the P1F65 code?

Itâ€™s not recommended to drive with this code active, as it may compromise the safety of the hybrid/EV system and lead to further damage.

5. How is the P1F65 code diagnosed?

A technician will use a scan tool to verify the code, inspect the voltage discharge circuit, check high-voltage battery connections, and test the inverter and related components.

6. What repairs are needed to fix the P1F65 code?

Repairs may include replacing a faulty discharge resistor, repairing or replacing damaged wiring, or addressing issues with the high-voltage battery or power inverter module.

7. Is the P1F65 code specific to Buick hybrid/EV models?

Yes, the P1F65 code is specific to hybrid or electric Buick vehicles equipped with high-voltage systems.

8. How much does it cost to fix the P1F65 code?

Repair costs can vary widely depending on the issue but may range from $200 for wiring repairs to over $1,000 if major components like the inverter or battery need replacement.

9. Can a dead 12V battery cause the P1F65 code?

While a dead 12V battery could cause related issues, this code specifically involves the high-voltage system, so the 12V battery is unlikely to be the root cause.

10. Will clearing the P1F65 code fix the problem?

Clearing the code without addressing the underlying issue will not resolve the problem, and the code will likely reappear. Proper diagnosis and repairs are necessary.