AutoCodes – Buick – P1FF0 Buick

P1FF0 Buick Code - Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Performance

Quick Answer

The hybrid battery contains 192 individual cells. Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control 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: P1FF0 Buick indicates Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Performance.
Common causes: Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control 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 765

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 P1FF0 Buick Description

The hybrid battery contains 192 individual cells. Two cells are welded together in parallel and called a cell group. There are a total of 96 cell groups in the hybrid battery assembly. These cell groups are electrically connected in series. Each individual cell group is rated at 3.7 V, for a nominal system voltage of 355 V direct current. The battery cell groups are joined to form 3 distinct sections. The first 24 battery cell groups make up battery section 1. This section is adjacent to the cowl and contains battery cell groups 73 through 96. The next 28 battery cell groups make up battery section 2. This section is located behind section 1 and contains battery cell groups 45 through 72. The transverse battery section is section number 3 and it contains the remaining 44 battery cell groups 1 through 44. The battery sections also contain two temperature sensors, with one sensor located at each end of the section.
The battery energy control module monitors the voltage of the 96 battery cell groups. The voltage sense lines are attached to each individual cell group, and these sense lines terminate at a connector located on the top surface of the battery section. A voltage sense harness joins this connector to the battery energy control module.
The battery energy control module contains internal interface control modules that monitor specific cell groups.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to the hybrid powertrain control module 2 through serial data. The hybrid powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P1FF0 Buick - Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Performance - AutoCodes.com — P1FF0 Buick Code - Hybrid/EV Battery Interface Control Module 8 Voltage Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P1FF0 Buick?

Faulty Hybrid/EV Battery Interface Control Module
Hybrid/EV Battery Interface Control Module harness is open or shorted
Hybrid/EV Battery Interface Control Module circuit poor electrical connection

How to Fix the DTC P1FF0 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 P1FF0 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 P1FF0 Buick Code

1. What are common symptoms of the OBDII code P1FF0 in a Buick Hybrid/EV vehicle?

- Common symptoms include the check engine light coming on, reduced hybrid system performance, and potential issues with hybrid/EV battery charging.

2. What does the OBDII code P1FF0 Buick indicate about the Hybrid/EV Battery Interface Control Module 8 Voltage Sensor?

- The code indicates a performance issue with the voltage sensor in the Hybrid/EV Battery Interface Control Module 8, affecting its ability to monitor and regulate battery voltage.

3. What are possible causes of the P1FF0 code in a Buick Hybrid/EV vehicle?

- Possible causes include a faulty voltage sensor, wiring issues, poor electrical connections, or problems with the Hybrid/EV battery itself.

4. How can I diagnose the P1FF0 code in my Buick Hybrid/EV vehicle?

- Diagnosing the P1FF0 code typically involves using an OBDII scanner to retrieve the code, checking the voltage sensor and related components for faults, and testing the battery's voltage levels.

5. Can I continue driving my Buick with the P1FF0 code present?

- It is not recommended to continue driving with the P1FF0 code present, as it can lead to further damage to the Hybrid/EV system and potentially affect the vehicle's performance and safety.

6. How can I repair the P1FF0 code in my Buick Hybrid/EV vehicle?

- Repairing the P1FF0 code may involve replacing the faulty voltage sensor, repairing any damaged wiring or connections, or addressing issues with the Hybrid/EV battery to restore proper voltage sensor performance.

7. Are there any DIY tips for addressing the P1FF0 code in a Buick Hybrid/EV vehicle?

- DIY tips may include checking and cleaning electrical connections, inspecting wiring for damage, and ensuring the Hybrid/EV battery is properly charged and functioning.

8. How do I reset the check engine light after repairing the P1FF0 code in my Buick Hybrid/EV vehicle?

- The check engine light can be reset using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the code and reset the light.

9. What should I do if the P1FF0 code keeps returning after repairs in my Buick Hybrid/EV vehicle?

- If the P1FF0 code keeps returning, it may indicate an ongoing issue with the voltage sensor or another component, and further diagnostic testing may be needed to pinpoint and address the root cause.

10. Is it necessary to visit a dealership or mechanic for repairs related to the P1FF0 code in a Buick Hybrid/EV vehicle?

- While some repairs may require specialized knowledge and equipment, DIY enthusiasts with experience in automotive electrical systems may be able to address the P1FF0 code themselves. If in doubt, consulting a dealership or mechanic is recommended.