AutoCodes – GMC – P1BB0 GMC

P1BB0 GMC Code - Hybrid/Electric Vehicle Battery 68 Circuit High Voltage

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: P1BB0 GMC indicates Hybrid/Electric Vehicle Battery 68 Circuit High Voltage.
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 952

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 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1BB0 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 P1BB0 GMC - Hybrid/Electric Vehicle Battery 68 Circuit High Voltage - AutoCodes.com — P1BB0 GMC Code - Hybrid/Electric Vehicle Battery 68 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BB0 GMC?

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

How to Fix the DTC P1BB0 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 P1BB0 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 P1BB0 GMC Code

1. What are the common symptoms of OBDII code P1BB0 in a GMC Hybrid/Electric Vehicle?

- Common symptoms include the check engine light being illuminated, reduced power mode activation, and potential issues with the vehicle's hybrid/electric system.

2. What could cause the OBDII code P1BB0 in a GMC Hybrid/Electric Vehicle?

- The code P1BB0 typically indicates a high voltage in the Hybrid/Electric Vehicle Battery 68 circuit, which could be caused by wiring issues, a faulty battery pack, or a problem with the vehicle's hybrid system components.

3. How serious is the OBDII code P1BB0 in a GMC Hybrid/Electric Vehicle?

- The code P1BB0 should be addressed promptly as it can lead to performance issues and potential safety concerns related to the high voltage in the battery circuit.

4. What are some repair tips for addressing OBDII code P1BB0 in a GMC Hybrid/Electric Vehicle?

- It is recommended to have a professional technician diagnose the issue using specialized equipment to pinpoint the exact cause. Repairing or replacing faulty wiring, battery components, or hybrid system parts may be necessary.

5. Can I continue driving my GMC Hybrid/Electric Vehicle with OBDII code P1BB0 present?

- It is not advisable to continue driving the vehicle with the code P1BB0 present, as it can affect the performance and safety of the hybrid/electric system. It is best to have the issue addressed as soon as possible.

6. How can I prevent OBDII code P1BB0 from occurring in my GMC Hybrid/Electric Vehicle?

- Regular maintenance and inspections of the hybrid/electric system components, including the battery pack and wiring, can help prevent issues that may trigger the code P1BB0.

7. Is it safe to reset the OBDII code P1BB0 in a GMC Hybrid/Electric Vehicle using a diagnostic tool?

- While resetting the code may temporarily turn off the check engine light, it is important to address the underlying issue causing the code to prevent potential safety hazards associated with high voltage in the battery circuit.

8. How much does it typically cost to repair OBDII code P1BB0 in a GMC Hybrid/Electric Vehicle?

- The cost of repairing OBDII code P1BB0 can vary depending on the exact cause of the issue and the parts that need to be repaired or replaced. It is recommended to get a professional diagnosis to determine the cost accurately.

9. Can I fix OBDII code P1BB0 in my GMC Hybrid/Electric Vehicle myself?

- Repairing OBDII code P1BB0 in a GMC Hybrid/Electric Vehicle typically requires specialized knowledge and equipment. It is advisable to consult a professional technician to ensure proper diagnosis and repair of the issue.

10. Will OBDII code P1BB0 cause permanent damage to my GMC Hybrid/Electric Vehicle if left untreated?

- Ignoring OBDII code P1BB0 can lead to further damage to the hybrid/electric system components, potentially resulting in more costly repairs and safety risks. It is recommended to address the issue promptly to prevent permanent damage.