AutoCodes – GMC – P1B1F GMC

P1B1F GMC Code - Hybrid/Electric Vehicle Battery 30 Circuit Performance

Quick Answer

The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. 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: P1B1F GMC indicates Hybrid/Electric Vehicle Battery 30 Circuit Performance.
Common causes: Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
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 875

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 Mar 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B1F GMC Description

The Hybrid/Electric Vehicle battery pack contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the hybrid/EV battery pack 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 cells are also grouped together into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the cowl and contains batteries 67 through to 96. Battery section two is located behind section one. It is made up of 72 cells/24 cell groups and contains batteries 43 through to 66. The transverse battery section is section number three, it is made up of the remaining 126 cells/42 cell groups and contains batteries 1 through to 42. The three battery sections are individually serviceable components.
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
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 hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P1B1F GMC - Hybrid/Electric Vehicle Battery 30 Circuit Performance - AutoCodes.com — P1B1F GMC Code - Hybrid/Electric Vehicle Battery 30 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B1F GMC?

Faulty Hybrid/Electric Vehicle Battery Pack
Faulty Hybrid/Electric Vehicle Battery Interface Control Module

How to Fix the DTC P1B1F GMC?

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 P1B1F GMC 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 P1B1F GMC Code

1. What are the common symptoms of OBDII code P1B1F in a GMC hybrid/electric vehicle?

The common symptoms include reduced fuel efficiency, decreased power output, and the illumination of the check engine light.

2. What are the potential causes of OBDII code P1B1F in a GMC hybrid/electric vehicle?

Possible causes include issues with the hybrid/electric vehicle battery, faulty battery management system, damaged wiring or connectors, or a software malfunction.

3. How can I diagnose the OBDII code P1B1F in my GMC hybrid/electric vehicle?

Diagnosis typically involves using a professional OBDII scanner to retrieve the specific fault code, inspecting the hybrid/electric vehicle battery and related components, and testing the wiring and connectors for any faults.

4. Can I continue driving my GMC hybrid/electric vehicle with the P1B1F code present?

It is not recommended to continue driving the vehicle with the code present, as it can lead to further damage and potentially unsafe driving conditions. It is best to address the issue promptly.

5. What are some repair tips for resolving the P1B1F code in a GMC hybrid/electric vehicle?

Repair tips may include inspecting and repairing any damaged wiring or connectors, resetting the battery management system, checking for software updates, or replacing the hybrid/electric vehicle battery if necessary.

6. Is it safe to attempt repairs for the P1B1F code in my GMC hybrid/electric vehicle myself?

While some basic diagnostic and repair tasks can be performed by DIY enthusiasts, it is recommended to consult with a professional mechanic or technician with experience in hybrid/electric vehicles to ensure proper diagnosis and repair of the issue.

7. How much does it typically cost to repair the P1B1F code in a GMC hybrid/electric vehicle?

The cost of repairs can vary depending on the specific cause of the code, the extent of the damage, and the labor rates in your area. It is advisable to obtain multiple quotes from reputable repair shops for an accurate estimate.

8. Can driving habits affect the occurrence of the P1B1F code in a GMC hybrid/electric vehicle?

Yes, aggressive driving habits, frequent rapid acceleration, and harsh braking can potentially strain the hybrid/electric vehicle battery and contribute to issues that trigger the P1B1F fault code.

9. How often should I have the hybrid/electric vehicle battery system inspected to prevent the P1B1F code from occurring?

Regular maintenance schedules for hybrid/electric vehicles typically include battery system inspections every 12,000 to 15,000 miles or once a year, but it is advisable to consult your vehicle's manual for specific recommendations.

10. Are there any recalls or technical service bulletins related to the P1B1F code in GMC hybrid/electric vehicles?

It is recommended to check with authorized GMC dealerships or visit the National Highway Traffic Safety Administration (NHTSA) website to stay informed about any recalls or technical service bulletins related to the P1B1F code in GMC hybrid/electric vehicles.